Ask HN: What did you make during lockdown? - <AUTHOR> While we were all in lockdown a lot of makers have been making incredible things. So I decided to make Lockdown Showcase to showcase all those products.<p>Post your own product or browse through other ones here: https://lockdownshowcase.com/ <comment><USER3> I made an automatic chess board that allows you to play with another person over the Internet (using lichess), but with a physical board. It has been described as "very lockdown chic".

Each chess piece has a magnet in the bottom. The board senses your moves by looking at where magnets disappear and appear, and it plays your opponent's moves by dragging them with an electromagnet underneath the board moved by a pair of stepper motors.

[https://incoherency.co.uk/blog/stories/autopatzer.html](https://incoherency.co.uk/blog/stories/autopatzer.html)

<comment><USER4> How does it handle moves where pieces might accidentally hit each other like [https://en.wikipedia.org/wiki/Castling](https://en.wikipedia.org/wiki/Castling) and knight moves?

<comment><USER3> It uses a ridiculous bastardisation of Dijkstra's algorithm to work out the shortest set of operations to get the piece from where it is to where it needs to be. This includes a way for it to notice that it would like to run into another piece, and then add to the search tree a copy of the current node, but with some operations inserted at the start to first move that piece out of the way.

It's in here, but not for the faint-hearted: [https://github.com/jes/autopatzer/blob/master/mojo/lib/Autop...](https://github.com/jes/autopatzer/blob/master/mojo/lib/Autopatzer/Router.pm)

I did try giving it an accurate model of the acceleration curve of the stepper motors, so that it would do the set of moves that actually took the least _time_ , but that led to strange motions where it would deliberately move pieces too far, and then back again at a diagonal, just to minimise the number of corners it needs to turn, so I instead just made it do a simple shortest- path, because it looks more natural to a human observer.

I.e. instead of going 2 squares right, then 2 squares up, then 1 square diagonal up-left, it would prefer to go 4 squares right, then 3 squares diagonal up-left. It takes less time, but looks stupid.

<comment><USER5> I'm having a hard time not crying over how beautiful this is. There's something so ludicrously satisfying about bringing our professional computer science hammers to bear on silly hobby projects. I love it. It's like being a kid again, where everything is just imagination and fun, but we get to finally play with the big boy's toys (like Dijkstra's algorithm).

</comment></comment></comment></comment><comment><USER6> I managed to plant vegetables and keep them alive and growing well in to June.

I make the same attempt every year, so this is a record for me.

On a more serious note, I had plans when the lockdown began. I wanted to build some kind of a "robot" as an educational venture. Do some redecorating, learn Unity and figure out how to use the TIG welder I bough one night when I was drunk. In reality what has happened is that my children's school, after school club, their sports clubs and Scout groups have given them so many lockdown "challenges" I haven't had time to do anything because I'm in charge of them because my wife has to lock herself away from 9 to 5 to do teletherapy.

<comment><USER7> Tig welding is great way to essentially meditate, similar to painting, once you figure it out that is. Start with lines on 1/4" steel flat bars.

<comment><USER8> I find oxy/acetylene welding super meditative. The sound blocks everything out, putting you in a pink noise cocoon.

<comment><USER6> I have a fairly basic stick welder which I have used on a few occasions to do a few basic repairs and and make some metal supports for storage boxes.

I don't have a particular need for a TIG welder, but I bought it so I suppose I should find something useful to do with it. Problem is, I'm more of a woodworker.

<comment><USER7> The main reason for tig is small stuff, exotic stuff, and stuff where you just want the welds to be gorgeous, eg if you're going for that nasa look.

The goal for mig is to hot glue some metal together. My friend does woodworking and loves making legs out of rebar/etc with the mig welder.

<comment><USER6> I should have got MIG then. A nice weld is beautiful to look at, but my needs are more practical.

Still, I'll give it a go. My son wants to build a "mecha arm" with all sorts of spy features. This might be a good excuse to learn how to use it.

</comment></comment></comment></comment></comment></comment><comment><USER9> I learned the basics of Houdini to turn Lidar data into visualizations [1], as well as take a point cloud scan of my wife to drive a particle animation [2].

On the non-tech side of things, our garden has been a real source of happiness. We planted everything from seeds with the kids and grew pollinator flowers, vegetables, etc. [3]

One of my favorite projects was finally making a sourdough starter and taking my pizza making up a notch. [4]

1: Houdini [https://www.instagram.com/p/B_nG_jdpY7F/?igshid=r2pegr6lrr3l](https://www.instagram.com/p/B_nG_jdpY7F/?igshid=r2pegr6lrr3l)

2: art [http://gregorywieber.com/insta.html](http://gregorywieber.com/insta.html)

3: flowers [https://www.instagram.com/p/B_-f3h5JWUq/?igshid=rf7jx6vaimgw](https://www.instagram.com/p/B_-f3h5JWUq/?igshid=rf7jx6vaimgw)

4: pizza: [https://www.instagram.com/p/CAy8Hf0pF29/?igshid=1gipfxkhd9bh...](https://www.instagram.com/p/CAy8Hf0pF29/?igshid=1gipfxkhd9bhe)

<comment><USER10> Amazing work! How did you do the 3d scanning?

<comment><USER9> Thank you :) For the portraiture I'm using the iPhone Pro's True Depth camera via an off-the-shelf app called "Capture" by Standard Cyborg.

</comment></comment></comment><comment><USER11> I made an allotment! After waiting on a list for a while we received 10m x 10m space for ourselves for €50/year. We planted onions, potatoes, garlic, radish, and a few similar things. The timing worked out pretty well as we got access just at the start of May, which is a good time for planting a lot of things, and coincided with the lockdown here in Finland.

This morning I went over there and harvested some of the garlic, and right now our house smells of it. In a week or two it'll be dry enough to eat.

[https://www.instagram.com/p/CBdLC6ADy5j/](https://www.instagram.com/p/CBdLC6ADy5j/)

[https://www.instagram.com/p/CBs3Qpjj5Qa/](https://www.instagram.com/p/CBs3Qpjj5Qa/)

Not a project, in the sense that this site usually lists, but still something I (we) made.

</comment><comment><USER12> I resuscitated a 20-year-old-website that was somewhat popular back in the day called storysprawl.com. It's private now, but I have friends join me on Sunday nights to write chapters together - we join Zoom, we write, we read them to each other. It's kind of like choose-your-own-adventure combined with round- robin fiction: Read chapter one, there are choices at the bottom, make a choice. If the next chapter is written, keep going, and if it's not, you can write the next chapter yourself and create choice labels at the bottom (if it's not The End) for other authors to follow up on in the future. It's stupid fun - our main story is now 128 chapters with an average story length of 11 chapters. I'm able to do math to project that this particular story will probably end up around 600 chapters and 1000 pages before all the storylines are completed.

I'm keeping the site private for now because I can't be bothered to see a lawyer and get my legal policies/checkboxes in place, but on Friday I did host a live event where I read chapter one aloud, had viewers vote for what choice to take, and continued until we hit an ending. It worked well, it was just a facebook event for friends, and eight people showed up out of my 200 friends which is pretty good. I'll probably do it again and open the event up to the Public. I'm hoping I'll attract more interested authors, I can always slowly give them access to the site.

(If anyone here likes the idea of contributing silly creative writing - <USER2> person, past tense - feel free to message me.)

<comment><USER13> neat project! the collective writing process seems intimidating to me, although i've always secretly wanted to dabble in fiction writing.

> "I'm keeping the site private for now because I can't be bothered to see a > lawyer and get my legal policies/checkboxes in place..."

not to belittle what you've built, but i really lament how much legal considerations overhang our collective psyches, especially on the internet, and how much we believe in legalese and lawyers to protect us from potential issues. both the risks and the protections are unduly outsized in our minds.

by default, we each own the copyrights to our own words. posting our words on websites should implicitly give those websites permission to display (perform) those words (or not). we shouldn't need pages of jargon to spell that out, and no amount of expensive precognition is going to ward off even most potential misconstruals (malicious or not).

<comment><USER12> I agree... 20 years ago I had no qualms about putting the site out. But now even aside from IP policy, there's privacy policies, child policies, GDPR... and I'm not sure if there are shelves below which I don't have to worry about that stuff. At some point soon I'll find a lawyer that can help me figure that out, because I would definitely like to just have the site out there for people to visit even if I'm not going to market the heck out of it.

</comment></comment></comment><comment><USER14> I've been contributing to the Andorid port of Anki (HTML based flashcards + spaced repetition) for the past few months.

[https://github.com/ankidroid/Anki-Android](https://github.com/ankidroid/Anki- Android)

[https://github.com/david-allison-1](https://github.com/david-allison-1)

Knowing that I've actively been impacting students (particularly medical students) from around the world has been really good for the soul.

<comment><USER15> I rely heavily on Anki for work and study. Thank you!

The android version already seems to work great. Is there a roadmap somewhere? I'm curious what's being worked on.

<comment><USER14> Thanks!!

No official roadmap (such is Open Source), but:

* Rust Conversion (got a proof of concept, need to productionise it) - Anki Desktop has moved to Rust. We can unify all of the platform, and remove most of our backend code and maintenance burden. * Android 11 has made significant changes to how applications store files on the device (Scoped Storage). I expect this will be a nightmare to deal with: [https://developer.android.com/preview/privacy/storage](https://developer.android.com/preview/privacy/storage) * Visual HTML Editor (probably 2.13) - currently editing and adding formatting could do with a ton of love. Typing HTML by hand isn't a great experience for non-technical users. * User onboarding & UX - We get tons of bad reviews: "All my cards have been deleted" \- this is because we fail to explain how Anki/Spaced Repetition works and that we take control of scheduling. People download AnkiDroid expecting flashcards, and we can do much better in this area. * Performance improvements with larger collections - we're fast, but there's still lots of low-hanging fruit regarding multithreading. * Background media sync - Medical Students have multi-gigabyte collections (just fixed a bug where some Android systems wouldn't open zips >= 2^31-1 bytes). We're tied to the AnkiWeb protocol for syncing, but it'd be a much better UX if we moved this to the background.

Personal Goals (some point in the future)

* CI/CD improvements - both speeding up build times, adding more styles of testing to the pipeline and adding more auto-linting. * Accessibility - our TTS doesn't play well with Android talkback; this hurts me to type. * Better gamepad support

<comment><USER14> Missed the edit window formatted:

Thanks!! No official roadmap (such is Open Source), but:

* Rust Conversion (got a proof of concept, need to productionise it) - Anki Desktop has moved to Rust. We can unify all of the platform, and remove most of our backend code and maintenance burden.

* Android 11 has made significant changes to how applications store files on the device (Scoped Storage). I expect this will be a nightmare to deal with: [https://developer.android.com/preview/privacy/storage](https://developer.android.com/preview/privacy/storage)

* Visual HTML Editor (probably 2.13) - currently editing and adding formatting could do with a ton of love. Typing HTML by hand isn't a great experience for non-technical users.

* User onboarding & UX - We get tons of bad reviews: "All my cards have been deleted" \- this is because we fail to explain how Anki/Spaced Repetition works and that we take control of scheduling. People download AnkiDroid expecting flashcards, and we can do much better in this area.

* Performance improvements with larger collections - we're fast, but there's still lots of low-hanging fruit regarding multithreading.

* Background media sync - Medical Students have multi-gigabyte collections (just fixed a bug where some Android systems wouldn't open zips >= 2^31-1 bytes). We're tied to the AnkiWeb protocol for syncing, but it'd be a much better UX if we moved this to the background.

Personal Goals (some point in the future)

* CI/CD improvements - both speeding up build times, adding more styles of testing to the pipeline and adding more auto-linting.

* Accessibility - our TTS doesn't play well with Android talkback; this hurts me to type.

* Better gamepad support

<comment><USER16> I would love to contribute to Anki, especially learning that it's Rust. I know Anki's time-based space repetition is highly effective for long-term learning, but I've found it frustrating when I or my friends really just needed to cram the night before an exam.

When I am strongly constrained in the time-domain, I've found the older Leitner method to be the most efficient. I also have a lot of difficulty performing this in Anki except by resorting to absurd time controls and manual resets that are difficult to explain to friends.

I'd love to provide Anki with a strict Leitner mode for last-minute cramming. I'm just not sure the Anki project would support this, as I've seen them be fairly dismissive of it in the past.

It's very exciting that this is in Rust.

<comment><USER17> i thought anki was written in python - was it re-written in rust?

<comment><USER14> It's in the process of being migrated to a Python/Rust hybrid. Most of the backend is now rust-based: [https://github.com/ankitects/anki/tree/master/rslib](https://github.com/ankitects/anki/tree/master/rslib)

</comment></comment></comment></comment></comment></comment></comment><comment><USER5> Having a monthly "Show HN-athon" would be nice (or is that already a thing and I always miss them?).

\- I did some woodworking at the start of lockdown. It was very therapeutic. Built a small table with a flip-top back where charging accessories can be stored: [https://imgur.com/ea67ANO](https://imgur.com/ea67ANO)

\- And some more woodworking to build a shoe rack (never enough room for all our shoes): [https://i.imgur.com/ihw12YT.jpg](https://i.imgur.com/ihw12YT.jpg)

\- A Raspberry Pi using BigGAN to constantly "daydream" weird, artistic photos: [https://blog.hmac.io/2020/06/08/a-daydreaming-ai-for-my- desk...](https://blog.hmac.io/2020/06/08/a-daydreaming-ai-for-my-desk.html)

\- A new image hashing algorithm that can recognize matching photos even in extreme cases like disparate crops from a parent image. Used it to help my friend dedupe their school's yearbook: [https://blog.hmac.io/2020/06/10/writing-new-image-hashing- al...](https://blog.hmac.io/2020/06/10/writing-new-image-hashing-algorithms- to-help-a-yearbook-teacher.html)

\- Currently building an escape room for my wife's birthday. Poor little 3D printer is working overtime this quarantine :)

<comment><USER18> That side table is amazing. How did you learn woodworking? I've been meaning to get into it but have no idea where to start.

<comment><USER5> Back in college I got the bug for woodworking, so I went to the local big-box, bought a hand saw, screws, an electric drill/driver, and some wood. I built a spice rack using just that. It came out _terrible_. Lopsided, broken drill bits inside it, brackets holding it together. I had no idea how stain worked, so I bought a can of stain and threw the whole thing into a trash bag with the wood to leave it for a day.

I still have that ugly spice rack. Sometimes the best way to learn is to just do.

Many years later I got the bug again and that time I started spending more time on YouTube. I find videos to be an incredible resources, whether I'm browsing for something specific or just watching good content and learning secondarily. Matthias Wandel has a channel with a variety of content that's worth watching just on its own, but you'll learn endless amounts of woodworking skills as well. Steve Ramsey's channel is great, though his videos can definitely be a bit annoying to watch. Really there are too many great channels to name. Best bet is to figure out what kind of thing you _want_ to build and then search for videos on how to build that. I guarantee there will be hundreds of great, simple tutorials.

If you've got a woodworking store nearby (e.g. Rockler) they often have free or cheap classes that can be great even for newcomers. Those are great because you don't need any tools; they provide everything. And they cover a wide range of stuff so you can figure out what kind of woodworking you like. Maybe you like turning wood, or working with a scroll saw to build small decorative pieces. I attend a Father's Day class where we made a wooden bow tie. It was free and introduced me to scroll saws, inlays, and spray varnish. Best of all, I got a great gift to give my father at the end of it.

<comment><USER18> Thanks, already subscribed to those channels. Thing is, much like a lot of comments here where devs want to learn new tech but struggle to come up with a side project idea, I can't really think of anything useful that'd be within a beginner's skillset. Anyways, thanks for the thoughtful reply and maybe watching a few videos will spark my creativity!

</comment></comment></comment></comment><comment><USER19> I've written SAAS called Docula (document generator that doesn't suck).

I've been programming professionaly for close to 20 years and no matter what I always ended up writing PDF generator for one case or another. This time I've had to write another PDF export again and I've decided to do it right this time.

Having some unexpected extra time I've decided to create WYSIWYG editor in similar fashion to Figma or Zeplin where you set your components and then you just call API endpoint with json data (variables, collections...) and you've got your pdf file

Stack is quite simple: Rails app for all the book keeping, visual editor is written in vanila JS and the generator itself which takes variables and template data (both json) is written in Go.

I am just getting ready to launch it, so if you are interested you can sign up at [http://docula.app](http://docula.app) and I will send first batch of invites in month or so.

<comment><USER20> Sounds good. Subscribed!

</comment></comment><comment><USER21> Tool to annotate audio files in real time. Built this because I'm taking remote saxophone lessons, but could be more broadly applicable no doubt. [https://audioremarks.com/](https://audioremarks.com/)

Tool to delete items from gmail en masse per sender: [https://github.com/poundifdef/gmail- deleter](https://github.com/poundifdef/gmail-deleter)

Open-source website to turn recipe websites into plain-text and printable versions: [https://plainoldrecipe.com/](https://plainoldrecipe.com/)

</comment><comment><USER22> Hahahaha....

I didn't quite keep up with my normal responsibilities while also not quite managing to keep up with the remote learning my kids were doing.

<comment><USER23> Yeah anyone with young kids had far less time during lockdown, not more.

<comment><USER24> Sort of depends I think. We have a four year old and two year old twins. We've found we have a ton more time. Mostly because we were forced to actually slow down and be at home instead of always on the go.

<comment><USER22> We have approximately the same kid layout, just a few years further down the road (twins with an older sibling). Once kids are in school, the situation changes dramatically. School ends up consuming a big chunk of the "work" day, so keeping up with work takes up much of what used to be "family" time, net result is that there is far less free time now than there used to be.

<comment><USER25> This has been my experience too.

If both parents are working full time (not furloughed) then you often end up working early mornings and evenings to compensate for lost time during the day.

Same is also true if you have younger kids but either / both parents work jobs that require lots of formal meetings. As understanding as employers have been, there's only so many times one can have a meeting interrupted because a doll fell over or Duplo piece fell off an impossible structure. So parents will often arrange their day where they essentially tag-team their day, meaning lost hours are made up in the early mornings / late evenings.

</comment></comment></comment></comment></comment><comment><USER26> Made a platform for party/drinking games over Zoom.

[https://ziago.co](https://ziago.co)

Games run on Realtime Firebase DB, so players join with a link and everyone is kept updated with game flow and other player actions etc.

So far had 10000 people play, and has 9 games and still working on more. The focus for now is on social/turn-based kind of games.

Runs on Vue and Firebase. FB helped me to launch it in a month. Wrote about it at [https://codeburst.io/how-i-built-a-real-time-games- platform-...](https://codeburst.io/how-i-built-a-real-time-games-platform-for- social-distancing-in-a-month-2216427c6351)

<comment><USER27> Cool! Will have to check that out. I've been doing "happy hour" with a handful of friends in multiple countries each Friday and mostly I just screen share one of the Jackbox games (the "You Don't Know Jack" people). Video and audio is sent from my PC and people use their phones as a "buzzer".

Still, despite having multiple games available, I'm always glad to test out some other options.

<comment><USER26> Great, would love to hear any feedback!

</comment></comment></comment><comment><USER28> I went from knowing nothing of French to reading 20 thousand leagues under the sea by Jules Verne in French (the original language)

It's not that big of an achievement since I'm Brazilian and I already speak Italian, the romance languages are somewhat similar. But I'm happy and I want to keep learning new languages because that proved to be a rewarding experience all steps of the way.

I've used Lingq and Memrise, if anyone is interested :)

<comment><USER29> Was going to ask what you had used. Brazilian too, but know only Spanish (kinda), and English. Will check out these two. Thanks and congrats!!!

<comment><USER28> LingQ is something else. The ideia is that you should feed the app with "input" from your target language that you care about[1], and listen to it again and again. Memrise is more like a Duolingo that actually works haha

[1] [https://www.youtube.com/watch?v=rw- u_vVx6Is](https://www.youtube.com/watch?v=rw-u_vVx6Is)

<comment><USER29> Thanks!

</comment></comment></comment></comment><comment><USER30> [https://thiswoddoesnotexist.com/](https://thiswoddoesnotexist.com/)

I got to playing around with recurrent neural networks and made a site that generates Crossfit "Workout of the Days (WODs)". It's trained on the workouts from crossfit.com.

My motivation were to learn more about how character-based RNN's work, remember how to host a site on my Digital Ocean VPS with flask, and do some fun frontend work. It posed a few unique challenges, like scraping the crossfit website, experimenting with different network architectures, and finding ways to validate the efficacy of those networks.

It's terribly overfit and will sometimes generate workouts verbatim from the crossfit.com database, but since it's just a fun project, it was more important for me to get consistently good, grammatically correct results and some overfit ones rather than a bunch of nonsense text and a few hidden gems.

My next step is to sum up the key takeaways in a blog post about the full stack of the application and call it finished, or continue to play around with network hyper-parameters and training techniques, since nurturing my neural network knowledge for NLP was a huge goal.

Always looking for feedback and happy to answer any questions!

<comment><USER31> I love this project! Have you tried actually completing any of the generated workouts?

How do you calculate overfitting for something like this? I know how you would do so with a more traditional supervised learning model with numerical inputs/outputs but NLP still seems a little like black magic to me since I haven't dived into a project using it myself. Is it just a comparison of similarity between generated posts and all posts in the training set? How do you calculate how "close" an output is to an input?

<comment><USER30> Haha no I might get kicked out of my gym if I try to do

\- Workout of the day (WOD)

\- 15 Dumbbell Throws

To understand how I calculated loss, I have to describe the whole model, so let's take it from the top.

The model consists of 3 distinct layers. The first layer is a character embedding. We need a unique representation for each character in the entire corpus. Without checking, I believe it was ~80 different characters. This includes all the the uppercase letters, lowercase letters, numbers, little symbols, and even the new line character (`\n`). One way to encode these characters as a state vector is to one-hot encode each character. With one hot encoding, something like 'a' would be (potentially) encoded as `[1,0,0,0,...,0]`. Each character has its own unit vector orthogonal to all the other vectors. With ~80 different characters, a one-hot encoded corpus would span `R^80`. That seemed prohibitively large to me, so I went with the learned embedding route. With an embedding, you reduce the dimensionality of the state vectors from `R^80` to something much smaller by no longer making each vector orthogonal to each other. In this system, `a` could be encoded as `[.34, 0, .01,..., 0]`. In this system, characters do not have their own unique dimension and their cross-products are no longer 0 as they are not independent. But this is actually something we want! We learn different characters are related to each other from the corpus. This may put all the number character vectors closer to each other, since they are used in similar ways in the workouts.

So the benefit of the embedding over the one-hot encoding is two-fold: more compact representation and a vector representation that is able to show similarities between different characters. Note to self, exploring the embedding created by the Crossfit workout corpus would be super interesting .

The next layer (or actually a series of layers) is the LSTM layer. To avoid writing a novel here, here are a of resource that can explain it better than me ([https://colah.github.io/posts/2015-08-Understanding- LSTMs/](https://colah.github.io/posts/2015-08-Understanding-LSTMs/)). It's a node that maintains a hidden state that allows it to "remember" previous inputs to the run. These cells are followed by some hidden layers. Look for a blog post soon on my page for a more in depth explanation as I learn to explain it better.

The output from our LSTM cell is fed into a final fully connected layer that is the size of our vocab (~80 characters). A softmax activation is attached to the full connected layer so that our final output is a probability distribution across all the different characters.

So, the way our network works (at predict time) is we feed in a single character, it's converted to a number (a->24). That is embedded as a vector, that vector goes through the LSTM layers (which hold some hidden state that "remember" that `a` passed through). Then a fully connected layer and softmax gives a probability distribution of the characters. I sample from that distribution, which yields the next character.

As an example (and how the site works), when you click "Pump It Up", I prime the network with the text "Workout of the day (WOD)". After priming the network (which gives some state to this LSTM cells), I take the next generated character, print it to the screen, and then feed it back into the network. Without fail, after priming with "Workout of the day (WOD)", the next character generated is "\n". The ")" character that was fed in just before would not be enough to generate "\n", but the LSTM has enough built up state to know it's time for a line break. I find that so cool and is why I went with the character model when a word-based model could likely generate workouts better.

Now that we understand the network, particularly the output as a probability distribution over the characters, we can finally talk about training loss. The naive way to calculate loss would be to feed in a character, produce a character, and then give a +1 if the produced character matched the expected character from the training text. But we can do something much smarter. Instead of comparing by character, we simply compare the output probability distributions! Yes, we can do that using cross entropy loss. This is so much more powerful than simply comparing character outputs. This loss function is both how our model is trained (propagating that loss back through the network) and how we evaluate the network a testing time.

This validation testing that I did relied on the fact that the characters in a workout are dependent on one another, but workout themselves are independent. With this in mind, I was able to randomly split up the whole workouts into a training a testing batches. I trained on a subset of workouts, then tested the efficacy of the models using the testing set. Then I summed an averaged the losses of the run, plotted the results, and ran through the entire corpus of workouts again with a new random selection of workouts. By exploiting the independence across workouts, I was able to perform cross-validation.

Did this work? Honestly, I did not see much of a divergence in the training and testing efficacy, but it was the best thing I could think of to test if my model was overfitting.

\---

I hope this stream of consciousness gives you a little overview of how this works and my theory on testing. This will serve as a good rough draft for what I've been meaning to write for a while. I really could not match the model's loss on testing vs training to spot overfitting in the network, so maybe that was flawed. I need to continue to do research into testing on sequence data. I am doing some stock market time series investigation work right now, so I really hope to learn the state-of-the-art techniques are for validation testing on time series data, which in essence, is sequence data like these crossfit workouts.

</comment></comment></comment><comment><USER32> I've always loved Nintendo's handheld hardware, and in the last couple years have enjoyed playing around with the Pico 8 virtual console[1]. The two seemed like a great match, so with a couple other emulator implementations as a reference I made a Pico 8 emulator for Nintendo 3ds and Switch homebrew. Its far from complete, but it now works with Pico 8 Png carts, many of which are available on the Pico 8 BBS[2].

It was much different from anything I've built previously, and it was a fun learning experience that I plan to keep working on for a few hours a week.

Github repo: [https://github.com/jtothebell/fake-08](https://github.com/jtothebell/fake-08)

[1][https://www.lexaloffle.com/pico-8.php](https://www.lexaloffle.com/pico-8.php) [2][https://www.lexaloffle.com/bbs/?cat=7&carts_tab=1#mode=carts...](https://www.lexaloffle.com/bbs/?cat=7&carts_tab=1#mode=carts&sub=2)

</comment><comment><USER33> I worked hard and managed to ship my first ever alpha product, [https://NoteBrook.com](https://NoteBrook.com) . I am iterating on it nights and weekends to build out the core feature set and get it on every platform as published apps. It's been a really interesting journey but I'm glad I have been working on it and moving it forward. It's really great to see all the users signing up, and the beta version is going to really move it close to feature completeness as a first release.

</comment><comment><USER34> I made a free word game (single player, arcade style) for web and mobile. :) Try it in a click without installing anything here:

[https://seanwilson.itch.io/wordoid](https://seanwilson.itch.io/wordoid)

Let me know what you think and what score you can get! There's intentionally no instructions screen (learn the game as you play) or title screen so you can get straight into playing. It's written in vanilla JavaScript.

I found this story from last month hilarious, which sums up the current mobile game trend I want to avoid:

[https://www.bbc.co.uk/news/technology-52633088](https://www.bbc.co.uk/news/technology-52633088)

> "I don't want jewels, cartoons, or potential dates. I want to play Scrabble > against my friends and family. That's it. Nothing else," wrote one > signatory.

> "They've turned it into some sparkly Candy Crush abomination," Ian Pym from > Fareham, Hampshire, told the BBC. "I defy any adult to play it for longer > than 10 minutes and not feel physically sick."

I'm also working on turning a web best practices guide I wrote into an ebook: [https://www.checkbot.io/guide/](https://www.checkbot.io/guide/)

</comment><comment><USER35> I built this: [http://artbuffer.com/](http://artbuffer.com/)

I built it so I could easily create unique art for printing, framing and putting up in my home.

Some examples: [https://www.artbuffer.com/view?a=wslyHCoGjqoA3ZKgsQ_hNAlnshT...](https://www.artbuffer.com/view?a=wslyHCoGjqoA3ZKgsQ_hNAlnshT- jt)

[https://www.artbuffer.com/view?a=-9Wr6aLtgF383zsAWxchXJbt8CW...](https://www.artbuffer.com/view?a=-9Wr6aLtgF383zsAWxchXJbt8CWjko)

[https://www.artbuffer.com/view?a=OuIs3I6vHAyqV- PoMb6EFiRVAFw...](https://www.artbuffer.com/view?a=OuIs3I6vHAyqV- PoMb6EFiRVAFwRb5)

<comment><USER36> This is great work. Very cool stuff.

</comment></comment><comment><USER37> Made a new release of PJON: [https://github.com/gioblu/PJON](https://github.com/gioblu/PJON)

PJON® (Padded Jittering Operative Network) is an arduino-compatible, multi- master, multi-media network protocol. It proposes a new Open Standard, it is designed as a framework and implements a totally software-defined network protocol stack that can be easily cross-compiled on many MCUs and architectures like ATtiny, ATmega, SAMD, ESP8266, ESP32, STM32, Teensy, Raspberry Pi, Linux, Windows x86, Apple and Android. PJON operates on a wide range of media and protocols like TCP, UDP, MQTT, ESPNOW, USB, Serial, RS485, LoRa, PJDL, PJDLR and PJDLS.

</comment><comment><USER38> I am working on a new flash card app for macOS and iOS. I was tired of trying to use things like Anki or online options for language flash cards that were either hard to use or not open enough. My app is easy to use, provides stats, offers import/export (including importing Anki decks), and sync via bring- your-own file storage (i.e. use Dropbox or iCloud, no SaaS subscription required).

You can see a brief video preview here: [https://twitter.com/ussherpress/status/1272638649000030208](https://twitter.com/ussherpress/status/1272638649000030208)

I'm still at least 2 months from releasing. :)

</comment><comment><USER39> Does a hobby produce a product? Seems all about 'products'. I'm working on an electric Go Kart for the kids, almost done. Its going to kick ass. Its not a product, it doesn't have a web site, I didn't write a single line of code, but I took an old gas powered go kart and turned into an electric one.

<comment><USER40> that sounds pretty cool! and not just for the kids :) how fast does it go?

<comment><USER39> The motor controller has 3 settings, Low, Med , Hi - which correspond to 16 mph, 24 mph, and 32 mph. It has a soft start mode where it won't go full power right away but ramps up, one can disable this feature. Its pretty quick but not earth shattering, it won't really do a burn out. The 9, 10, 12 year old kids think its great and drive it well (well enough). The 6 year old kids are slightly too small and don't watch where they are going - but they love it. Its super fun for the kids and more than any of them can handle yet - which is the best part. Going electric was a great idea, the kids are louder than the Go Kart, and the battery is big enough to last for hours.

</comment></comment></comment><comment><USER41> I wrote an automated solution to spending requirements for high interest checking accounts. High interest checking accounts (up to 5% APR) often require a dozen or more transactions a month to qualify for high rates. Debbit automates this by purchasing 50 cent Amazon gift cards and/or paying your cable bill in small increments throughout the month.

Behind the scenes, Debbit is a hand rolled scheduler that runs Selenium automation to navigate Amazon + bill pay websites.

[https://github.com/jakehilborn/debbit](https://github.com/jakehilborn/debbit)

<comment><USER42> Excellent idea! Will be checking this out further.

</comment></comment><comment><USER43> Finished and released the 2.0 version my Mac video utility Claquette. It steps in where QuickTime Player is too basic and using video editing software like Final Cut is too cumbersome: [https://www.peakstep.com/claquette/](https://www.peakstep.com/claquette/)

</comment><comment><USER44> * stealthcheck[0] - Service health monitoring with email alerts and automated restarts in <150 lines of code. Just create a checks.json config file where each check includes a check command, interval, and on-fail command. Set up multiple stealthcheck instances all pointing at each other for redundancy.

* quarantest[1] - Most CI testing tools focus on automated tests, but sometimes the changes are very visual and you just want to give your team a demo of your pull request to play with. quarantest runs a build for each GitHub PR, generates a URL for the build, then posts a comment on the PR with a link to the build. You can see an example of it in action here[2]. Still in a pretty hacky state. Probably would be better to use the GH status API with a link that goes to a page listing all the past builds from the PR instead of spamming comments, but it's getting the job done.

[0]: [https://github.com/anderspitman/stealthcheck](https://github.com/anderspitman/stealthcheck)

[1]: [https://github.com/anderspitman/quarantest](https://github.com/anderspitman/quarantest)

[2]: [https://github.com/iobio/gene.iobio.vue/pull/497](https://github.com/iobio/gene.iobio.vue/pull/497)

</comment><comment><USER45> A Go SQL Query Builder (and struct mapper).

[https://github.com/bokwoon95/go-structured- query](https://github.com/bokwoon95/go-structured-query)

It was created to solve one of my pain points about scanning columns into deeply nested structs. You have full control over what columns gets mapped to what struct field, no annotation-based reflection needed. The type safe query building part was inspired by jOOQ ([https://www.jooq.org/doc/latest/manual/getting- started/use-c...](https://www.jooq.org/doc/latest/manual/getting-started/use- cases/jooq-as-a-sql-builder-with-code-generation/))

</comment><comment><USER46> I have been re-implementing the ninja build system [1] using the ideas from the "Build Systems a la Carte" paper [2]. The software isn't ready for the public yet, but I've written 2 blog posts so far about some of the ideas.

1\. Using type-classes to model the expressivity of build systems [3] 2\. A Future is a Suspending Scheduler [4]

[1]: [https://ninja-build.org/](https://ninja-build.org/) [2]: [https://www.microsoft.com/en- us/research/publication/build-s...](https://www.microsoft.com/en- us/research/publication/build-systems-a-la-carte/) [3]: [https://nikhilism.com/post/2020/type-classes-build- systems/](https://nikhilism.com/post/2020/type-classes-build-systems/) [4]: [https://nikhilism.com/post/2020/futures-suspending- scheduler...](https://nikhilism.com/post/2020/futures-suspending-scheduler/)

</comment><comment><USER47> A new shell: [https://github.com/geophile/marcel](https://github.com/geophile/marcel).

\- Based on Python -- filter, transform, etc. using Python functions.

\- Pipe Python values, not strings.

\- Database operations from the command line.

\- Run commands remotely and combine results.

</comment><comment><USER48> I look at it as "The Call Center for the rest of us..."

I was forced to really learn my way around Twilio when everyone on the office went home.

After 3 weeks I ended up with a "React App" where all of my team can pick up the phone, 'whatsapp', SMS, and email. It's pretty cool because it turns the CRM thing around, because you start with the contact already in the system, so it's a _native_ customer centric approach compared to older computer centric ones.

All this matched a migration into a new PWA based on React-Admin - so next to the "Call Center" are all the "admin" actions. I guess this was called an ERP. Only now it has a Call Center build on top of it.

I did inspire myself on Twilio Flex - but at $150/user/month I decided to build it myself and eject from all the plugin complications of building for a platform.

I have learned a lot, and jumped into the crazy world of VOIP. Collaborated with new colleagues and enjoyed myself building something totally new from my head to the screen.

</comment><comment> e-_pusher Not a product per se, but I wrote my first real blog post. I had it stewing as a draft forever, and with coronavirus I had no excuses anymore to not finish the draft.

[https://iskender.ee/EE-Specs/](https://iskender.ee/EE-Specs/)

I also completed an electronic art project that I have been making as a gift for a friend. It is a PCB which looks like a linocut of an airport, but with LEDs on it that mimic an airport's lighting at night. Hoping to write the process that went into making it on my blog soon.

</comment><comment><USER49> It's been a busy lockdown at work but I have finally gotten around to open sourcing my self-hosted note system that has a unique twist: every note is repeated on its own schedule (kind of like spaced repetition). I now take notes on everything I read and put them into this. I also keep track of my own diary in it. This helps me retain information better and keep mindful about stuff that matters to me.

[https://github.com/msipos/mind-palace](https://github.com/msipos/mind-palace)

</comment><comment><USER50> Spent time on an extremely silly yet immensely satisfying project: [https://what2cook.today](https://what2cook.today)

What2Cook Today helps you save time by recommending new meals with recipes.

This project came out of sheer frustration trying to think of new things to cook everyday during this lock down. Currently, the website covers primarily Indian meals but I will hopefully cover more cuisines in the future.

What2Cook Today is a side-project that was a week-long one built in my free time.

Appreciate any feedback to improve.

</comment><comment><USER51> I built a tool to check if an email exists without sending any email. I also created a SaaS out of it: [link redacted].

The tool connects to the target email's SMTP server, and parses the response of the "RCPT TO" command. To avoid IP blacklisting, I use Tor.

The code is in Rust, 100% open-source. The core library is here: [link redacted]

<comment><USER52> Aren't Tor exit nodes mostly blocked already?

<comment><USER51> > mostly

Using Tor, I can verify around ~60% of emails. Notably, the exit nodes can connect to Gmail/GSuite servers. So it's not that bad.

If Tor's exit nodes are blocked by a server, I fallback to Heroku, where I have right now 3 fixed-IP instances. And if I see that one of these also gets blacklisted, I would have it self-destruct and relaunch, Heroku assigns a new IP on each new instance.

<comment><USER53> Does Heroku reuse these IP addresses? Can someone get them after you?

<comment><USER51> I unfortunately don't know the answer to these two questions.

</comment></comment></comment></comment></comment><comment><USER54> Thanks to the lockdown, I've finally wrapped up the long work on a Slack plugin that helps you find the location of coworkers and meeting rooms: [https://www.slashmap.com/](https://www.slashmap.com/).

I used Go on the backend (rewritten from Node) and Vue on the frontend.

How it works: first, you upload a picture of your office layout using the web UI and mark everyone's locations. Then if you send "/map @JohnDoe", the plugin will return a map with the location marked on it. It works for meeting rooms and other locations as well.

Now the plugin has dozens of users and were featured in the Slack's app directory as "New and noteworthy".

If you have any questions, feel free to ping me at email@example.com :)

<comment> j-rom This is super cool! Just out of curiosity, have you thought about automating the on boarding process at all? Something to streamline the process so that you don't need to manually mark each location? Or maybe even supporting multiple buildings?

<comment><USER54> Thanks for the feedback! The app already supports multiple floors and multiple buildings. Regarding the streamlining of the process, I was thinking of something like adding an option to automatically send out invitations to everybody in the company to add their own location. What do you have in mind?

<comment> j-rom A bit late on this. But from my experience, if the onboarding is pushed onto the user, not everyone is going to do it, there might be some errors, etc... I was just thinking if there was some way you could automatically get their info without requesting it from each person.

</comment></comment></comment></comment><comment><USER55> I made Timmy ([https://timmytimer.com](https://timmytimer.com)), a social pomodoro timer with free web and mobile apps. Sort of like "Twitter for productivity." No login required.

It's getting a lot of use by college students and coders. Pretty fascinating to see what everyone is working on or learning. The social accountability and leaderboard are proving to be strong motivators.

<comment><USER56> Not a pomodoro person, but I really like the idea of a cute mascot helping people get closer to their goals. Good job!

<comment><USER55> Thanks! I always try to brand projects with some kind of named mascot where possible.

</comment></comment></comment><comment><USER57> I created a campsite notification system that emails you when your selected campsites and dates are available to book.

[https://www.campalert.live](https://www.campalert.live)

It currently checks BC, Alberta and Canadian National Parks. US parks to come soon. It took a while to get national parks on there because they don't send that data in JSON, it's all html bleh.

</comment><comment><USER58> Wrote and published a book on how to implement Sign in with Apple ([https://siwa.fluffy.es](https://siwa.fluffy.es)) as I am an iOS dev and also backend dev, plus the deadline Apple set for it is end of this month.

Didn't do much marketing but still managed to sell 15+ copies, pretty happy about this attempt, spent 3 weeks writing it after work hours.

</comment><comment><USER59> I recreated parts of the Windows 98 UI using CSS. [https://jdan.github.io/98.css/](https://jdan.github.io/98.css/)

<comment><USER60> Nice! I've been doing something similar, recreating the original Macintosh OS in React: [https://mockintosh.com](https://mockintosh.com)

</comment></comment><comment><USER61> I build a Lisp inspired functional programming language for PHP [1]. Normally, I build web applications with PHP. But during the Lockdown I tried to build something different. It is still a lot of fun and I found some contributes that help me to release the first version soon.

[1] [https://phel-lang.org/](https://phel-lang.org/)

</comment><comment><USER62> I built htmx[1]: a no-dependencies and cleaned up successor to intercooler.js that lets you use AJAX, Web Sockets and Server Sent Events directly from HTML.

I began work on hyperscript[2]: a language designed to embed well in HTML, inspired by HyperTalk (the programming language from HyperCard). I hope to develop it into a general purpose programming language for the Javascript runtime.

[1] - [https://htmx.org](https://htmx.org)

[2] - [https://hyperscript.org](https://hyperscript.org)

<comment><USER63> Big sky. Montana? Heads up that on your website the "contact" links is an anchor href when, I believe, it should be a mailto.

</comment></comment><comment><USER64> I've recently written a Python app that selects a random location in an area defined by a user-supplied shapefile [1], grabs corresponding aerial imagery from Google Maps, and posts it as a geotagged tweet:

[https://github.com/doersino/aerialbot](https://github.com/doersino/aerialbot)

I've built this tool because satellite imagery can be extremely beautiful [2], and I was looking for a way of regularly receiving high-resolution satellite views of arbitrary locations such as the center pivot irrigation farms of the American heartland [3] in my timeline. Plus, for obvious reasons, it's nice to see the world without actually having to go outside right now.

Currently, I'm running four Twitter bots based on ærialbot:

* @americasquared, which posts one randomly selected square mile of the United States every 4 hours: [https://twitter.com/americasquared](https://twitter.com/americasquared)

* @placesfromorbit, which analogously posts a 5×5 km square anywhere in the world every 6 hours: [https://twitter.com/placesfromorbit](https://twitter.com/placesfromorbit)

* @baekmanpyeong, which similarly posts a 1.818×1.818 km square (that's a million (i.e. _baekman_ ) _pyeong_ , an old-fashioned area measure) somewhere in South Korea every 8 hours: [https://twitter.com/baekmanpyeong](https://twitter.com/baekmanpyeong)

* @nihonmusuukei, which posts a square kilometer of Japan every 12 hours: [https://twitter.com/nihonmusuukei](https://twitter.com/nihonmusuukei)

\---

[1]: [https://en.wikipedia.org/wiki/Shapefile](https://en.wikipedia.org/wiki/Shapefile)

[2]: [https://earthview.withgoogle.com](https://earthview.withgoogle.com)

[3]: [http://www.thegreatamericangrid.com/archives/1441](http://www.thegreatamericangrid.com/archives/1441)

<comment><USER65> This is amazing, great readme.

<comment><USER64> Thank you – approachable readmes are really important to me, so this is validating!

</comment></comment></comment><comment><USER66> I built an AR notes app on iOS. You can take a picture of an object. Create a note which comprises of a name, description, and audio. You can then just point your phone at that object and it shows you the notes and plays the audio. It's something I've always wanted for myself.

<comment><USER67> That sounds really useful. I don't have an iPhone but if I did I would use something like this.

</comment></comment><comment><USER68> I built a new Optical Flow AI. Instead of being a cranky old man complaining about other people's mistakes, I decided to just fix things myself.

Before Corona hit, I had created a new data set and given a talk about all the stuff that current state of the art AIs for Optical Flow get wrong. I find the topic interesting, because those bugs directly lead to drones like Skydio crashing into thin wires or branches without leaves.

Plus, I needed optical flow to work for a project, but the state of the art didn't work well enough.

Then I thought "ah f* it" and so I built a new architecture that avoids the issues that I had been whining about.

Now, 36 days of training later, it looks like I might have succeeded :)

[https://www.dropbox.com/s/3tfrs9sjm9heypk/example_selflow_ha...](https://www.dropbox.com/s/3tfrs9sjm9heypk/example_selflow_hajo.jpg?dl=0)

Top left and right are the two input images. Bottom center is the "ground truth", meaning the result that a perfect AI would produce. Bottom left is one of the State of the Art, according to the Sintel benchmark. Bottom right is my new architecture.

You can see that the State of the Art tends to blur the two persons together and blur them with the background between them and the frame border. My approach uses monocular depth cues to correctly segment them into multiple movement layers.

<comment><USER5> I'm not familiar with Optical Flow research, and I'm sure you already know, but are you familiar with the U^2-Net architecture (a new variation of U-Nets)? I only bother mentioning it at the risk of being redundant because it's new and I know how easy it is to miss stuff in the fire hose that is machine learning research papers. Its results for their specific task, salience mapping, are incredible for such a simple and lightweight architecture. And from a skim of Optical Flow and your example it seems like it might apply there as well. It should be able to grab the long-ranging features necessary for Optical Flow.

Do you have a public dataset that you can share or only a private one? Kinda looks like you built a dataset using Skyrim which ... is brilliant.

</comment></comment><comment><USER69> [https://laptopsinspace.de](https://laptopsinspace.de)

3d spatial video chats based on jitsi

</comment><comment><USER70> [https://github.com/tsiki/connectednotes](https://github.com/tsiki/connectednotes)

Zettelkasten based note taking app. Uses your personal Google Drive as the backend (I'd like to add Dropbox backend at some point too) so no third party storage is needed, built as PWA to provide access from every device with native-like experience. Still some polishing to do but it's getting there.

<comment><USER67> Would be helpful to add pictures and gifs showing how it's used and a few example workflows.

</comment></comment><comment><USER71> I built lesstabs - a browser extension that closes and archives old inactive tabs automatically after 24h. It then lists them when you open a new tab.

[https://chrome.google.com/webstore/detail/lesstabs/gpdnlknek...](https://chrome.google.com/webstore/detail/lesstabs/gpdnlknekkniebhjbflbcglgibnfcaah)

<comment><USER72> Brilliant idea!

</comment></comment><comment><USER73> This: [https://narrationbox.com/](https://narrationbox.com/) Still adding a ton of features very frequently. Working on this out because of me and my cofounder's own misery of creating narrations, voiceovers and other audio content. idea is to create one platform for everything audio and voice marketing.

</comment><comment><USER74> I made a small app for firefighters. The goal is to get to know your local engine while sitting on the toilet.

I released the app on the google and apple store for free. To get my investment back (time and running costs) i choosed to bill the fire-stations per vehicle. My goal here was to go as little as possible with the pricing.

The app is written in Flutter, backend a mix of spring and vaadin.

Current market are german fire stations (Most of the fire stations in germany are volunteer based)

[https://play.google.com/store/apps/details?id=dev.hvoss.fahr...](https://play.google.com/store/apps/details?id=dev.hvoss.fahrzeugkunde)

[https://apps.apple.com/us/app/id1507208896](https://apps.apple.com/us/app/id1507208896)

Landingpage: [http://fahrzeugkunde.hvoss.dev/](http://fahrzeugkunde.hvoss.dev/)

</comment><comment><USER75> I wrote new editions (free updates) to two eBooks I have written, one a Common Lisp book and one about using Hy language "Lisp on Python":

[1] [https://leanpub.com/lovinglisp](https://leanpub.com/lovinglisp)

[2] [https://leanpub.com/hy-lisp-python](https://leanpub.com/hy-lisp-python)

I have also been working on physical fitness: bought some weights and also usually go on a brisk 45 minute hike near my house from about 5:30am to 6:15am every morning. I live in the mountains in Central Arizona and early morning is an interesting time to be in nature, predators [3] like coyotes and mountain lions are still out, and the birds are just starting to make their morning sounds.

[3] I usually spot a mountain lion every 2 or 3 years (not too often) and rattlesnakes about one or two a year. Lots of coyotes.

</comment><comment><USER76> I've found adjusting to work-from-home difficult, so I've been working on Podlet [1].

The idea is to simply turn any recurring meeting into a private podcast for all invitees. Any feedback would be appreciated.

[1] [https://www.podletmedia.com/](https://www.podletmedia.com/)

</comment><comment><USER77> I have been collecting lot of notes and needed an offline storage for the same. I created this small utility pinotes[1] that I run on Raspberry PI. The best part is I can use browser address bar to save stuff(from both desktop & mobile). I am using it for notes, todos, grocery list, watchlists, bookmarks, reminders, etc,.

I have assigned _pin_ as keyword, so I can use following search terms in address bar

      pin grocery!rice
      pin todo!pay electricity bill
      pin bmark!htttp://news.ycombinator.com

This creates grocery.md, todo.md and bmark.md with their content followed by whatever is after ! in search string.

[1]: [https://github.com/quaintdev/pinotes](https://github.com/quaintdev/pinotes)

</comment><comment><USER78> Started a crowdsourced website helping people that just moved in a new city/country to "get started" [1]. Anyone can edit a spreadsheet [2] and the infos will be directly reflected on the city page.

I've lived in several countries, and I wish there was experienced expats telling me the best carrier/area to live/gym/etc... instead of trying too many things and wasting a lot of time

[1] [https://travelhustlers.co/cityfaq/](https://travelhustlers.co/cityfaq/)

[2] [https://docs.google.com/spreadsheets/d/1-Lut4zmeDw9z-ikRJPH1...](https://docs.google.com/spreadsheets/d/1-Lut4zmeDw9z-ikRJPH1nrmXGqt6rYDWGraFYUGnPUk/edit)

</comment><comment><USER79> Not sure it started during lockdown, but I made 90% of some Thomson headphones mod to go from IR to bluetooth. Technically trivial but it took me a lot more time to actually do the work. Only issue right now is that I lick physical interface, need to fit usb socket and some buttons to control the bluetooth module (this [https://www.aliexpress.com/item/32822579482.html](https://www.aliexpress.com/item/32822579482.html) I took the board from). I also had to swap the original lipo battery because it was comically small (8min lifetime) and hack a fat two-pin connector to avoid solder joints failing with vibration. So many details :)

Sound is meh but it does operate.

</comment><comment><USER80> I've built a website to help magicians keep track of their tricks, and to give each other notes on performances: [https://trick.app](https://trick.app)

And documenting how I use magic in tech innovation on my podcast at magicseth.com

</comment><comment><USER81> I made a pinhole camera that plots 3D geometries in matplotlib/geopandas[1].

It's still WIP (need to do some minimal ray-casting to deal with depth ambiguity), but the overall goal is to develop a set of minimal camera perspective matrices that can be easily be extended for other uses (i.e I want to use my cameras to calculate geometric view factors as a way of clustering geometric features for statistical learning). Another application I've tested is to use camera and location parameters from the Google Street View camera to project OSM footprint geometries onto street view images.

[1] [https://github.com/saeranv/pincam](https://github.com/saeranv/pincam)

</comment><comment><USER82> I worked with theatre folks in my community to build an online interactive theatre show about space. The actors are all acting from home using whatever costume, makeup and set they can cobble together, and they communicate with the audience via WebRTC.

We've still got shows tonight and next weekend if anyone wants to attend (you can attend from literally anywhere as long as you've got a working device) and I wrote it all up in a blog here: [https://chrisuehlinger.com/blog/2020/06/16/unshattering- the-...](https://chrisuehlinger.com/blog/2020/06/16/unshattering-the-audience- building-theatre-on-the-web-in-2020/)

</comment><comment><USER83> I made an app, RhetorFit, to teach people logical fallacies and assumptions, and how they can make a bad argument sound convincing. Hopefully it can help fight misinformation organically, by better educating people.

Current looking for collaborators to add more content and do mobile dev.

[https://play.google.com/store/apps/details?id=com.intafel.rh...](https://play.google.com/store/apps/details?id=com.intafel.rhetorfit) [https://apps.apple.com/us/app/rhetorfit/id1514982376](https://apps.apple.com/us/app/rhetorfit/id1514982376)

</comment><comment><USER84> I built an app to create prints (framed or otherwise) of your fitness activities.

Strava only for now but uploading GPX/KML files coming shortly.

[https://cadenceprints.com](https://cadenceprints.com)

</comment><comment><USER85> I upgraded my 3D printer's X and Z axes to MGN12 linear rails in order to stiffen up the extruder significantly. I also switched the hot bed from glass to a magnetic pad.

I finished a PID toaster oven project from a few years ago. I've been using it to dry out filament. I also made a nice filament dry box to battle oozing.

I thought I was having anxiety over the last couple months, but it just turned out to be all the nerves in my heart electrically failing for no reason. Now I have a pacemaker. I ordered some electronics to capture my own ECG traces so I can detect the pacemaker pulses for fun.

<comment><USER5> > I thought I was having anxiety over the last couple months, but it just > turned out to be all the nerves in my heart electrically failing for no > reason. Now I have a pacemaker. I ordered some electronics to capture my own > ECG traces so I can detect the pacemaker pulses for fun.

Hope you're feeling better; I know how scary heart stuff can be.

After my own scare (luckily a false positive) I also learned that weird anxiety problems can be heart related. Since then I've started mentioning to people that they should discuss things like that with their doctor. I know many people don't like talking about anxiety with their doctors, thinking it's more a therapist thing, but yeah it can be a heart issue and good doctors can smell a heart problem from a mile away. EKGs are quick and easy.

<comment><USER85> Thanks! I feel great now that my heart is beating normally. Apparently my heart is in perfect shape other than the faulty wiring. Amusingly, they had to open me up again because of a loose ring terminal. As an embedded software engineer, I am geeking out trying to learn everything I can about pacemakers now. Maybe when I get tired of working on drones, I'll go work on the next generation of pacemakers. Get some tweaks in the next model before my battery dies! I'm just so lucky to be alive at a time that there's an easy off the shelf solution to what would otherwise be a life ending condition.

</comment></comment></comment><comment><USER86> I made a lot of music stuff. I hooked up an Arduino to control music tempo with my heart beat [1], made a browser based sequencer for the Korg NTS-1 [2], and a made a web app to generate patches for Teenage Engineering OP-1/OP-Z [3]

[1]: [https://github.com/schollz/heartbpm](https://github.com/schollz/heartbpm)

[2]: [https://schollz.github.io/carp/](https://schollz.github.io/carp/)

[3]: [https://op1z.com/](https://op1z.com/)

<comment><USER87> Very cool! Why do you need the Arduino for the heart-tempo? Can't you connect the pulse-sensor directly to the computer?

<comment><USER86> Yes, I think some pulse sensors can be! The one I got is specifically for Arduino / Raspberry Pi / etc. [1]

[1]: [https://pulsesensor.com](https://pulsesensor.com)

</comment></comment></comment><comment><USER88> I've built McPiper - simple Gitlab CI/CD pipeline monitor from macOS status bar.

When I work I usually have emails off, so no idea when the pipelines fail.

At the moment functionality is quite basic, but it solves the problem I had.

Also plan to add other CI/CD providers (Travis, Github actions, etc) in the next few versions.

It's my first macOS app, and I've managed to learn Swift + SwiftUI, so time well spent too.

[https://www.mcpiper.app/](https://www.mcpiper.app/)

</comment><comment> 10-1-100 I created a simple manual budgeting app with flutter called Go Budget, which is primarily optimized for entering purchases as easily as possible, but also provides income and bill tracking/reminders and a savings goal tracker.

It is currently in beta but I hope to launch in the next two weeks.

[https://gobudget.io](https://gobudget.io)

Edit:

iOS beta: [https://testflight.apple.com/join/4IMtFylH](https://testflight.apple.com/join/4IMtFylH)

Android: closed beta - email firstname.lastname@example.com if interested :)

<comment><USER89> A closed beta? No way to see it now?

<comment> 10-1-100 Here's a public beta link for iOS: [https://testflight.apple.com/join/4IMtFylH](https://testflight.apple.com/join/4IMtFylH)

Android is closed, but if interested you can email at email@example.com

</comment></comment></comment><comment><USER90> Wrote a HTTP client for Emacs based on Org mode: [https://github.com/federicotdn/verb](https://github.com/federicotdn/verb)

</comment><comment><USER91> I've been doing woodblock printmaking - [https://www.instagram.com/garyprints/](https://www.instagram.com/garyprints/)

<comment><USER92> Those look great! Woodblock seems like a really rewarding medium.

<comment><USER91> Yeah, it's really satisfying, even for quick experiments

</comment></comment></comment><comment><USER93> Mostly I have been working on a software project called TeXnicard, which is not yet complete, but a lot of things have been done, as can be seen from the timeline view of the Fossil repository. In doing so, I have found a bug (#702472) in Ghostscript, having to do with the printobject and writeobject operators. I both reported and fixed this bug, but have received no reply from Artifex about it so far. (The patch is currently included in the TeXnicard source repository, in the file called "gspatch.txt".) I have done some other things too, such as some improvements to ZZT (such as listing the date/time in the restore game menu), but the thing I have been working on most is TeXnicard. I have not done any hardware projects, though.

Some of the other ideas listed here look like interesting ideas too, although I don't always like the implementation. (I suppose that isn't so uncommon; that is why there are many different programs and other projects for similar purposes.)

But, occasionally I have played GURPS using the internet. Before the lockdown I was not doing it on the computer, but now I am sometimes doing. Since I am the only player, I simply used a direct connection; I wrote a shell script containing a command like this one:

      ts '%.s>' | tee -a send.log | nc -Clvt 12345 | ts '%.s<' | tee -a recv.log

We then coordinated the times with email, and he sent a bell to my terminal when he was ready. And then, I can just use "cat" and "sort" commands to produce a full log.

</comment><comment><USER94> I made a web app [1] to quickly create collections of keyboard shortcuts that can then be learned and trained.

I didn't like the pre-defined drills of existing shortcut learning software, so I tried hard to make it as seamless and efficient as possible to create personal collections of Keyboard shortcuts and text snippets. They can be imported from a public shortcut database or defined from scratch.

From there, you can practice your shortcut collections with the goal of memorizing them and getting faster and more accurate. It even calculates a confidence value for each keyboard shortcut in your collections based on your training performance.

I am using it myself extensively and have learned a ton of new shortcuts and have eliminated bad habits. Made a blog post (during lockdown) about my complete collection of shortcuts [2].

However, some of my first users seem to struggle with the concept of having to build their own collections. So I am learning a lot about product design and user onboarding right now. This is quite exciting for me as I am working mainly on Java Backends in my regular job.

[1] [https://keycombiner.com](https://keycombiner.com)

[2] [https://tkainrad.dev/posts/a-collection-of-all-keyboard- shor...](https://tkainrad.dev/posts/a-collection-of-all-keyboard-shortcuts-i- use/)

</comment><comment><USER95> I've been working on making my YouTube channel actually useful/updated, and somehow triggered YouTube's algorithm with my Turing Pi (Raspberry Pi compute module) cluster: [https://github.com/geerlingguy/turing-pi- cluster](https://github.com/geerlingguy/turing-pi-cluster)

I've also spent a bit of time cleaning and rearranging my workshop, and redoing a bit of my office for better video conferencing and streaming.

</comment><comment><USER96> I've been fairly productive especially in the first few months of lockdown.

1\. Chart based commenting system for Chartio [https://chartio.com/blog/charts-worth-commenting- on/](https://chartio.com/blog/charts-worth-commenting-on/)

2\. Helping the [https://howwefeel.org](https://howwefeel.org) team with their data and dashboards [https://how-we-feel-chartio.herokuapp.com/the-how-we- feel-pr...](https://how-we-feel-chartio.herokuapp.com/the-how-we-feel- project/emotional-insights/)

3\. A number of hydroponic experiments including with lettuce [https://img.chartio.com/nOueDAy2](https://img.chartio.com/nOueDAy2) and even trying corn [https://img.chartio.com/NQugK2G0](https://img.chartio.com/NQugK2G0)

4\. Finishing a book on Data Management that'll have a dead tree edition published later this year [https://chartio.com/blog/cloud-data-management- book-launch/](https://chartio.com/blog/cloud-data-management-book-launch/)

5\. A few small wood projects like a planter bed and a projector mount

</comment><comment><USER97> Just before lockdown I started a product management role at a scale-up in the UK, and to get a wider perspective of product and advice from people who have been through it before I've been chatting to other people who have built product teams. I've kicked off a blog to share what I've learnt from these conversations. Hope it's of use to others who are on a similar path!

[https://axelthomson.com](https://axelthomson.com)

</comment><comment><USER98> I made a command-line utility to download books from a Goodreads reading list using Library Genesis: [https://github.com/goodlibs/goodlibs](https://github.com/goodlibs/goodlibs)

(Since libraries have been closed, I used it to download my entire reading list. As I read through the books, if I find one I particularly like, I order a hard copy for delivery from my local neighborhood bookstore to support their business.)

<comment><USER99> Nice! I've always wanted to download a massive bunch of books and explore them randomly.

</comment></comment><comment><USER100> I built a habit app called SnapHabit [1] that helps you build habits with your friends/family through group habits and through social accountability.

I wanted to learn React Native/mobile development while trying to address the fact that for many of us, social distancing and lockdown have isolated us and destroyed our everyday habits.

The most interesting thing I've seen is that people really enjoy writing about and reading each other's mundane updates. The app has a notes feature which automatically sends out updates to everyone you've shared a habit with. But because the update is tied to the habit, people seem more comfortable writing more personal updates; it doesn't feel like bragging, annoying since it's not traditional social media where you're writing for an audience.

Some other observations and learnings I picked up while building it:

\- I love React Hooks. IMO, React is a lot more natural to reason about and to learn with hooks compared to class components. The entire app only uses hooks.

\- I used Expo and it's been mostly great. They take care of builds and OTA updates are super useful for iteration and moving fast! Cons: Expo updates too slowly; some bundled modules have been stuck on very buggy builds for a while and you can't do anything until Expo updates its modules.

\- Sending too many network requests will slow down your app because of React Bridge! I used Firestore which encourages making all requests on device via the client SDK. But React Native handles network requests natively so everything needs to be passed back and forth through the bridge, causing a lot of slowness if you have too many/large requests, so the Firestore way doesn't seem to work well in React Native. Instead, off load requests to a server so that you're making a single (or small number) of network requests.

\- Don't use React context for your app data! Changes to the context cause everything that's subscribing to it to re-render. I was using context for each day update, meaning every update caused all the other day-s to re-render. Redux is still a great solution and redux-toolkit has really helped reduce boilerplate and the friction to get set up.

[1] [https://snaphabit.app/](https://snaphabit.app/)

<comment><USER101> Good on you for jumping in the deep end to lean React Native and thanks for the advice. I just downloaded your app to take a look at it and it's really well done. I'm actually going to play around with it for my own personal goals for a bit.

</comment></comment><comment><USER102> [https://www.ncovindia.in/](https://www.ncovindia.in/)

I created Covid Dashboard for Indian states and cities.

I am from a small town in India and I couldn't find a way to track Covid cases, deaths and recoveries for last 3 weeks. Also, I am scientist and loves to work with Tabular data.

I needed to put this website to show some authorities of my town how the spread of our city is as compared to other cities historically. And it's been working out pretty well.

</comment><comment><USER103> My friend and I built essentially a REPL for your Firebase Cloud Functions - [https://github.com/FoundryApp/foundry- cli](https://github.com/FoundryApp/foundry-cli)

We feel like building backend takes a lot of unnecessary work that really isn't coding. It's usually all those different things like setting up your environment, running multiple containers on your machine, figuring out how all different services should communicate together, fetching your production data. So we wanted to simplify that. Ideally, one would love to develop in an environment that is basically a copy of your production environment. The same goes for data.

Our CLI tool gives you an out-of-the-box cloud environment for developing your Firebase apps. You start Foundry on your local machine, we watch your code and every time you save your files we trigger your functions in the cloud environment. We give you feedback right away. So it's kind of like REPL in a sense that you always get feedback on whether your code will work once you deploy it or not.

We also emulate both Firestore and Auth Users and make it really easy to access your production data. In our YAML you specify what you want to have available in your environment and we fetch the data for you.

We don't save any data.

Here are the docs - [https://docs.foundryapp.co](https://docs.foundryapp.co)

GitHub Repo - [https://github.com/FoundryApp/foundry- cli](https://github.com/FoundryApp/foundry-cli)

</comment><comment><USER104> No surprises from me: I launched v8 of my HTML5 canvas library back in April, which the admins here very kindly promoted to the front page of HN for a couple of hours - [https://scrawl-v8.rikweb.org.uk/](https://scrawl-v8.rikweb.org.uk/)

Since then I've released some updates to the library. Things I've been working on include:

\- Adding a "polyline" entity (which, I hope, can be used for freehand drawing) and fixing the path animation code so things can be moved along a path at constant speed - [https://codepen.io/kaliedarik/pen/MWadEwm](https://codepen.io/kaliedarik/pen/MWadEwm)

\- Tweaking and improving the "phrase" entity (for graphical text) to make it easier to add styling markup to it, plus some stuff to make it look better when animating along a path ... though sadly there's still an (very!) annoying text height bug that needs to be addressed - [https://codepen.io/kaliedarik/pen/dyYeOZb](https://codepen.io/kaliedarik/pen/dyYeOZb)

And for the past few weeks I've been investigating/learning about physics engines. Because what's not to love about physics engines? I'm not close to releasing code for this yet, but I did manage to get the library to play nicely with Matter.js as part of my learning experience (the polylines add a nice touch to the net, I think) - [https://codepen.io/kaliedarik/pen/zYvbwBy](https://codepen.io/kaliedarik/pen/zYvbwBy)

</comment><comment><USER105> I've started to scratch my own itch, trying to improve the audiobooks streaming experience.

[https://bookcamp.app](https://bookcamp.app)

I've got enough validation to think there's a market for it, especially in the Plex community. So for the MVP, the server acts only as a layer between Plex and the client. This allows me to build a great audiobook player and add features on top that Plex is not capable of.

<comment><USER106> Hey DrMonkey, happy to hear someone is working on a better Audio book Player. I will try this out though I've never used Plex. I love audio books and have a few hundred on my Audible. I wanted to throw out some feature requests (feel free to ignore them) based on my audible experience:

1) note taking should not require having the book downloaded.

2) notes should be exportable

3) I'm constantly looking things up while I listen to non fiction. I think a visual stream of images tied to pronouns could be amazing. For example, when I listen to the history of ancient Egypt and it mentions Ramses II or all these tombs and tablets, it would be great to see thumbnails based on recently listened to content.

Anyway good luck!

</comment></comment><comment><USER107> I documented how to do some things on my Honda, and am learning how to make postcards the exact way I want them

[https://blog.ryjones.org/2020/05/17/MY16ADA](https://blog.ryjones.org/2020/05/17/MY16ADA)

[https://blog.ryjones.org/2020/05/26/MY16ADA](https://blog.ryjones.org/2020/05/26/MY16ADA)

<comment><USER108> What do you mean "learning how to make postcards the exact way I want them"?

<comment><USER107> I want to be able to put the images I want in the exact place that I want with cut lines and the like; I also want mail merge to work correctly.

I also want duplex color printing. I'm fairly close; Microsoft Publisher almost does what I want. I may end up writing a PDF generator or something.

I'm using A4 cardstock (for now) and the postcards need to be 6" wide and 4.25" tall. I print the image larger than that, so that I get full edge-to- edge printing.

I bought a paper cutter[0] to get the clean edges I want. Getting the mail merge to work how I want is a struggle.

Do you have suggestions? Any PDF generator I could feed images and restraints to and generate a printable PDF from zsh on my Mac, or WSL2 on a Windows machine, would be awesome.

[0]: [https://hardwarefactorystore.com/products/17-heavy-duty- guil...](https://hardwarefactorystore.com/products/17-heavy-duty-guillotine- paper-cutter?_pos=3&_sid=2143dfad1&_ss=r)

</comment></comment></comment><comment><USER109> I made a website for people to play and prototype/playtest board games digitally

      - online, multiplayer gameplay
      - rules are enforced (using a DSL)
      - customize the look and feel using WYSIWYG editors

Proof of concept implemented using the system: [https://turn- base.com/games/lobby/22/](https://turn-base.com/games/lobby/22/)

</comment><comment><USER110> I made myself a video game addiction. Went 10 years without playing anything while the friends I grew up with glowed about the virtual adventures they went on, urging me to play with them. Now I'm 628 hours into Fallout 4 with multiple level 200+ characters on the hardest difficulty settings. It's been a blast and I can see why that game was praised, but soon I'll have to take back control of my time.

</comment><comment><USER111> I launched [http://belgianbrewed.com](http://belgianbrewed.com) where you can find the most belgian beers online.

We launched early, since suddenly users were ordering on the beta environment. Product descriptions are not complete yet ( > 900 products)

I had some webshops before ( on woocommerce), but this became pretty big in a short time. It's already sold to my supplier ( who is a good friend off mine), but I'm still shipping new features.

The latest thing I added was E-commerce-filters.

Next one is "suggested products". And we are onboarding 2 breweries that moved their E-commerce from their own to belgian brewed.

I'm also redesigning the backend currently for seperating the backend to a "cloud" one and transforming it all to DDD.

Within a month, I'm planning to start my second shop on the platform, for a totally different use-case, as I'm "picky" on the clients to onboard first.

Since I need them to request totally new features, so I can expand functionality.

It's. Net currently with plans to move to. Net core ( I'm much more productive in .net framework currently, I hope that changes soon)

</comment><comment><USER112> I've improved Trivabble, a libre network scrabble game. I built it 3 years ago for my grandmother so she could play with my mother and my sister, living in another area. It was still on, but I had more or less forgotten about it, and then I started to receive thank you emails at the beginning of the lockdown. That prompted be to invest a lot of time on it during the lockdown.

I've seen many days with at least 100 games played during the lockdown, but I haven't set up proper monitoring for this.

Now, people have been contributing to the project since then. Thanks to one of them, there is support for many languages now.

[https://gitlab.com/raphj/trivabble/](https://gitlab.com/raphj/trivabble/)

[https://trivabble.1s.fr/demo/](https://trivabble.1s.fr/demo/)

(be gentle, this runs on a cheap VPS)

I thought about making a chess and a checkers version. I made an experimental fork for the latter, and Lichess does the job for the former so I don't plan to make it happen for now. But the code would benefit from this work.

</comment><comment><USER113> I wrote a simple "disaster-ready[1]" site for physical distancing, called the virtual bulletin board system. It is currently in operation in my city but nobody uses it. I tried to get it off the ground but I'm not really sure how to do it.

Basically, I think of it as a "geowiki" \- a wiki where each entry has an address and a lat/lng associated with it. Here's a screenshot: [https://i.imgur.com/RiCiuDi.png](https://i.imgur.com/RiCiuDi.png)

I went on the radio on a call-in show, I advertised it on the local city Reddit and their discord server, but it didn't catch on - at all. Except for a couple of vandals who deleted all the entries :)

It was fun, but it would have been a lot more fun if people had actually used it. I still might try to get it off the ground again, but I don't know how off the top of my head.

[1] What does disaster ready mean? It means that the site uses very little resources for the browsing operation. It is all static HTML/JS/CSS and uses cgi-bin (!) for the admin side/adding a new listing.

<comment><USER114> link please?!

<comment><USER113> I'll shoot you an email, since you've got your email in your profile :)

</comment></comment></comment><comment><USER115> I made an LED simulator!

I've been building an ESP32 LED framework for a couple of years, and thanks to some great advances in AVR emulation, we can now emulate an Arduino in the browser and preview the patterns.

I also made it into a desktop app that can flash a new firmware to a real device over wifi. Super fun.

[https://editor.soulmatelights.com/](https://editor.soulmatelights.com/)

<comment><USER27> That is really cool! I haven't messed with it in a while, but I went through a phase of doing lots of LED projects for camping/festivals/burns/etc. when those were still a thing.

As a noob coder also using this as a way to learn some stuff, a simulator was high on my list of things I wanted. Sure, I could tweak a program, upload to some little Trinket or Arduino, fire it up and see what happened, but it would make things a lot easier on the "learning basic Arduino code" side if I didn't have to build the whole thing first.

<comment><USER115> That's exactly it - all the setup is quite daunting when you're getting started. The framework also lets you control your LED patterns from an Android / iOS mobile app, which is really hard to do yourself. We're working on producing LED panels to use with it - though of course you can also DIY.

</comment></comment></comment><comment><USER116> Made Taskeera[1], a service for registering, observing, and monitoring all of your background jobs. Still working on some details and I will open-source a prototype soon with full details on how to self-host it your self.

Let me know if you have feedback or if you wanna take a look on what I've worked on so far. :)

1: [http://taskeera.com/](http://taskeera.com/)

</comment><comment><USER117> Fruition ([https://fruitionsite.com](https://fruitionsite.com)) - Build your next website or blog with Notion, for free. Notion has taken over the tech/design industry by a storm, and many people have used it to create web pages. However, Notion doesn't allow custom domain and the page URL contains a long uuid (for example: [https://www.notion.so/The-Beauty-of- Notion-4663b221fd154c07b...](https://www.notion.so/The-Beauty-of- Notion-4663b221fd154c07bb6f826b537bfcd4))

I built Fruition to solve exactly that. You can use a custom domain and add pretty URL slugs like [https://fruitionsite.com/showcase](https://fruitionsite.com/showcase). You can also add custom font and scripts like Google Analytics. It's all free and open source.

I shared this on a couple of Notion communities a month ago, and 40000+ people have checked it out since. Hundreds of sites have been built with Notion and Fruition.

</comment><comment><USER118> I created an online academy where I publish growth marketing resources to help startups grow from 1K to 1M - [https://academy.pallav.io/](https://academy.pallav.io/)

I've been meaning to do this for the longest time but couldn't keep my blog super active. In this regard, the lockdown was a blessing for me.

<comment><USER119> Very interesting, defo interested in this space

</comment></comment><comment><USER120> I built

NeumNotes - A Simple Neumorphic Styled Privacy First Notes App: [https://neumnotes.com/](https://neumnotes.com/)

And GitRelevant - Search The Latest AND Greatest Github Repos by using multiple filters: [https://gitrelevant.netlify.app/](https://gitrelevant.netlify.app/)

<comment><USER67> Design for NeumNotes is really nice.

<comment><USER120> Thanks!

</comment></comment></comment><comment><USER10> Primarily found new energy to put into my open source projects. Dusted off one of my old charting projects and modernized the build & documentation. [https://www.chartjs.org/chartjs-chart- smith/examples](https://www.chartjs.org/chartjs-chart-smith/examples)

Just before everything got locked down I wrote an implementation of the circuit breaker pattern in python. The new concept I added was the ability to customize how the breaker resets. Rather than simply resetting the breaker as soon as a request succeeds, I provide a way to have the breaker in a fast-fail mode until the net error count (errors - successes) reaches down to 0. [https://github.com/etimberg/pycircuitbreaker](https://github.com/etimberg/pycircuitbreaker)

I also did some Ham radio stuff, but my apartment doesn't have a balcony so I have no where to safely solder anything.

</comment><comment><USER121> I rebuilt my side project in Vue. It's meant to be an API generation tool for .NET Core. Basically provide a swagger definition and it generates a ready to run solution based on that definition. Still working through the details but it works on a basic level now.

[https://www.codenesium.com](https://www.codenesium.com)

</comment><comment><USER122> I made a tool for visualizing text in 3D: [https://nebulate.ai](https://nebulate.ai)

It runs a machine learning model in your browser to convert the text into points in a high dimensional space, and then it projects those points down to 3D.

Right now you can tell it to visualize post titles or comments from any subreddit or tweets from any Twitter user. I find it especially interesting to explore the news with it since every article is naturally presented alongside other articles that are about similar topics, often giving useful context.

Only works in desktop Chrome right now unfortunately. I was hoping to make it Firefox-first, but I need an API Firefox hasn't implemented yet.

Since the model runs on your machine, the "running model" stage will be slower or faster depending on your local GPU. If you have a decent GPU, I recommend bumping up to 512 points.

Would love any feedback! Here, on Twitter (@gradientassent), or in the Discord channel linked inside.

<comment><USER123> What do you use for the browser ML? An existing framework (tf.js?) or DIY?

<comment><USER122> TFJS, yep!

</comment></comment></comment><comment><USER124> I put together one of my first big self led projects! It's a windows application made using Qt that let's me set directories as favorites, then you can create and open files in the selected directory.

[https://github.com/LewkyB/Note_Creator](https://github.com/LewkyB/Note_Creator)

</comment><comment><USER125> I've started a story/tutorial blog about the technology necessary to survive on other planets www.martiancastaway.com. It's something I've wanted to do for a while and is primarily focused on control theory right now, but I've just started on the next chapter that is focused on more hardware development aspects.

</comment><comment><USER126> Covid tracker for my home state + an API to get data for other states.

[https://mississippicovid.com](https://mississippicovid.com)

Cranked it out in a couple weeks and the code made me sad so I haven't touched it since...ugly UI, bugs, etc

Also started back on an IoT soil sensor project.

Need to finish editing a book but tech provides an excusable distraction !

<comment><USER126> WOOF! Sometimes it doesn't load the MS data because the website I'm scraping changes their tables. I get the data per request...never got around to scraping it and saving it from a DB, which would be more reliable even if they changed their HTML markup

<comment><USER127> I made an Android app to do the same at the beginning of Lockdown for my country, South Africa. Was quite a cathartic experience. Just being an observer helped me to deal with the situation...

Then the guys doing the data moved their table and broke my app. Lucky I found a more reliable source. The app still works, I check it every morning. Anyway I found an international api here: [https://github.com/ExpDev07/coronavirus- tracker-api](https://github.com/ExpDev07/coronavirus-tracker-api) \- even started making a world map but moved on to other things. Code is on my site - [https://www.circusscientist.com/parsing-online-corona- virus-...](https://www.circusscientist.com/parsing-online-corona-virus-data- into-a-map-with-processing/)

<comment><USER126> Cool! We had the same idea with the NYTimes data :)

</comment></comment></comment></comment><comment> yoz-y A friend and I made an app for photo memos. The idea is to use it instead of the camera when you just want to remind yourself of a thing. Originally we wanted to challenge ourselves to write the app in 24 hours, but it predictably stretched out (quite) a bit.

[https://kluz.dux.works](https://kluz.dux.works)

</comment><comment><USER128> I worked on a website that aims to foster data-backed debates online. It builds a feed out of hacker news comments backed by data. [0]

The reasoning behind it is twofold: \- They are people who (due to their through their startups, side-projects, thesis, hobbies,...) are familiar with interesting datasets. \- With a tool that allow them to spot places on Hacker news where data are discussed, they will be incentivized to contribute and experience less friction.

I hope it increases the frequency of arguments linked to data and give more visibility to projects working with interesting datasets.

I am also looking for people who have projects, however small, where they see interesting data. It is for an ongoing interview serie.[1]

[0] [http://datapeek.org/](http://datapeek.org/)

[1] [http://datapeek.org/interview/alfadata](http://datapeek.org/interview/alfadata)

</comment><comment><USER129> Lots of loose ends still and nothing noteworthy to the extend that others are posting on here.

But I finally got around to reading up on a topic I've been curious about (causality modelling, causal inference, causal discovery) and started writing a little about it. The couple of interactions I gleaned from doing so have been very refreshing and are a great driver to continue down this path.

[https://georg.io/the_causality- driven_company](https://georg.io/the_causality-driven_company)

[https://twitter.com/GeorgRWalther/status/1271796549157339136](https://twitter.com/GeorgRWalther/status/1271796549157339136)

[https://twitter.com/GeorgRWalther/status/1272193903639375872](https://twitter.com/GeorgRWalther/status/1272193903639375872)

</comment><comment><USER130> Nothing of any importance. Managed to screw myself up to the point of having constant generalized anxiety, so yeah, things are really working out here.

<comment><USER131> If you're having a panic attack, run up a flight of stairs, or hop on a bike and do a sprint around the block. Get your heart pumping.

It sounds really counter intuitive but it works.

<comment><USER132> I agree, kind of. I have also suffered from panic attacks and the problem with this is that I'm thinking that I'm about to have a heart attack. The mere thought of running makes it worse. Breathing exercises (this has to be practised in advance) helps for me.

<comment><USER133> > I'm about to have a heart attack.

That's a real panic attack. Drinking cold water can help reset the loop causing it (worked for me maybe once). The only thing that really works for me is GABA (700mg daily for a year, then 250mg daily for life) - but it did come up short in my blood work.

<comment><USER130> Benzodiazepines are a real treat (as in "works a treat"). Highly addictive tho.

<comment><USER134> They're great for acute panic, but are not a solution to a chronic problem. Research shows that some antidepressants and 5-HT1A agonists work in the long term for anxiety, though.

</comment></comment></comment></comment></comment></comment><comment><USER135> I have many ongoing side projects I struggle to bring to a publishable state and noticed that my motivation was dwindling. I decided I needed to create something simple from start to finish, so I made a snake clone in roughly 5 days. [http://lizaaard.com](http://lizaaard.com)

</comment><comment> m-coleman I wanted a better way to hide and collapse comments and threads on HN, so I created a browser extension Hackollapse.

There are a few extensions like this out there already but I didn't like how they worked. With my extension you can quickly see how many children a comment has, easily show/hide them, collapse an entire thread from anywhere in the tree, and toggle whether or not HN remembers that you collapsed a thread.

It's available on Chrome and Firefox:

[https://chrome.google.com/webstore/detail/hackollapse/cfinlo...](https://chrome.google.com/webstore/detail/hackollapse/cfinlodmmfffhieajhboebcfplcfkfgg)

[https://addons.mozilla.org/en- US/firefox/addon/hackollapse/](https://addons.mozilla.org/en- US/firefox/addon/hackollapse/)

</comment><comment><USER136> I built an indoor hydroponic system from Ikea leftovers that I kept in my storage for a long time. Algot containers and Trofast shelving units is a relatively cheap option. Some of the parts I 3D-printed, and I'm pretty happy with the final result — [https://www.instagram.com/p/B_qbDyjjkeH/](https://www.instagram.com/p/B_qbDyjjkeH/).

Today is officially harvest time: [https://www.instagram.com/p/CBtMfWKDEoy/](https://www.instagram.com/p/CBtMfWKDEoy/). This is my second attempt on building a layered hydroponic. I built an Arduino-based system to automate most of the routine tasks. The only thing I need to take care of is to make sure that there's enough water/nutrient in the lower tank once a month.

</comment><comment><USER137> I made an app that will send a push notification to my phone when my build completes, so I can do dinner prep/make coffee/sit on the couch for 30 minutes rather than sit and watch a progress bar.

I used firebase cloud messaging to send a notification, and made a tiny app using flutter that just handles the notifications.

</comment><comment><USER138> A Chrome Extension to add how long ago a Reddit post was made, the number of comments and the number of upvotes to Google search results.

Reddit seems to be updating their old posts to rank higher on search engines, so if you search by time frame on Google, it shows a date that is way more recent than when the post was created. I decided to create this extension so that I could see the correct data about Reddit posts to save me unnecessary clicks into old/empty threads.

[https://chrome.google.com/webstore/detail/reddit-search- help...](https://chrome.google.com/webstore/detail/reddit-search- helper/laladmlmbneplheiajfdpcephiehoifh)

[https://github.com/built-by-as/RedditSearchHelper](https://github.com/built- by-as/RedditSearchHelper)

<comment><USER139> This is awesome. I search by time frame all the time and it was infuriating when that stopped working with Reddit.

Do you have any plans on putting it up as a Firefox extension as well?

<comment><USER138> thanks! no plans for that yet, but may tackle that when I have time

</comment></comment></comment><comment><USER140> A bunch of different things, few of which I got actual traction on, in true ADHD form (though some of that was being unable to go to the local hackerspace, for hardware work)

One thing which has been rather fun and successful, is speeding up uutils' implementation of integer factorisation: [https://github.com/uutils/coreutils/pulls?q=is%3Apr+author%3...](https://github.com/uutils/coreutils/pulls?q=is%3Apr+author%3Anbraud) (uutils is a Rust reimplementation of the GNU coreutils and findutils)

I'm not yet satisfied with the performance, and I still have quite a few ideas how to improve it, but it's still more than 44 times faster than it was when I started (measured on factoring everything between 2 and 10⁷; it's a lot more on larger / more-interesting sizes)

</comment><comment><USER141> I make software for jailbroken iOS devices. I had some long overdue ideas which I started to work on during the initial lockdown phase.

Luckily for me the iOS 13.5 mega jailbreak came along with some great timing and mainstream coverage. In the last 30 days (roughly since the jb release) I've made $13k. Not too shabby.

</comment><comment><USER142> I'm half way done my book about ADHD: [https://adhdpro.xyz/](https://adhdpro.xyz/)

I spent a tremendous amount of time researching and interviewing. It's bizarre how rare practical information is for dealing with ADHD despite the extensive research.

</comment><comment><USER143> Two things mostly.

First i created a corona statistic site (in german mostly) that displays the historic data from middle march till now(). It may not be super fancy still it has hourly record of all data i get. [http://corona.scriptjungle.de](http://corona.scriptjungle.de)

Than i created a cli tool that is rather simple but usefull (in my pov) "gss" => [https://github.com/voodooEntity/gss](https://github.com/voodooEntity/gss) Short for "go static server". This tool allows you to list directories/contents recursive via http on a defined port.

Rn starting with 2 other projects. \- A web ui/devtool for my selfdeveloped DB server(slingshot). \- A javascript based 2d game engine (may switch to cpp)

</comment><comment><USER144> I recently built a online text editor which lets you generate shareable documents with complex charts, graphs, mathematics, and more using the simplicity of Markdown.

[https://quickviz.app/](https://quickviz.app/)

It's built on top of the Pandoc, Graphviz, and MathJax

<comment><USER145> Great work. That will be very useful!

<comment><USER144> Thanks!

</comment></comment></comment><comment><USER24> I rebuilt our deck. Would share a picture but not really sure the best way to do that.

Thinking to redo our floors next. We pulled out our carpet on the main floor two years ago and painted the subfloor as a temporary solution. Current plan is to buy 1x8 pine boards and go for a sort of rustic wood floor look.

<comment><USER27> I'm in the middle of doing the same. It's more of a little porch-deck thing-- only a couple feet off the ground, underlying structure _mostly_ sound, etc.

The problem I ran into was that I underbought decking boards and now the local Home Depot has been out for the past few weeks. I want to get the same boards so they match so I'm hesitant to shop elsewhere right now. Talked to some folks and it's apparently not any major supply shortage, but rather everyone and their brother having the same idea.

As someone on the Home Depot subreddit put it: "honey, I'll do it when I have time." "Ok, well...now ya got time!"

<comment><USER24> I would guess you could put in a special order and then you'd just have to wait for the next time they get a shipment.

<comment><USER27> Replying a bit late, but the items I need are not available for ordering to a store for pickup. I only have the option to order future delivery to my home for (what appears to be $79 on the website but I haven't dug into that option because I'm not interested). I'll just wait for them to restock.

</comment></comment></comment></comment><comment><USER146> I created a YouTube series teaching entry-level programming in JS, in Esperanto. Because why the hell not.

<comment><USER147> Can you link it? :3

<comment><USER146> Sure: [https://www.youtube.com/playlist?list=PLLcWlBThjQPyrDDy3UIW8...](https://www.youtube.com/playlist?list=PLLcWlBThjQPyrDDy3UIW8Zo0yreJWyfAp)

I work on a few other Esperanto projects in my spare time. If anyone's curious: [https://martinrue.com/projects/](https://martinrue.com/projects/)

</comment></comment></comment><comment><USER148> Some good old open source on Hackster.io, started the lockdown with a thermal- camera Corofence mainly for the door entrance (food for paranoia inspired by the 3 little pigs and bad wolf story)

[https://www.hackster.io/dasdata/corofence-thermal- detector-f...](https://www.hackster.io/dasdata/corofence-thermal- detector-f4436f)

Then after several hackatons on the subject designed a end-to-end medical remote condition monitoring called MultiSenseCrown with some ai on the edge. [https://www.hackster.io/dasdata/multisensecrown-e0daf9](https://www.hackster.io/dasdata/multisensecrown-e0daf9)

Good thing that I will get soon a NVIDIA Jetson board, more fun for the next Pandemic session

</comment><comment><USER149> Touchless Networking: like Chat Roulette for business networking. It helps organizers of online events replicate the "mixer" portion of in-person events.

[https://www.touchlessnetworking.com/](https://www.touchlessnetworking.com/)

</comment><comment><USER150> Created a website [1] listing soon-ending Handshake [2] auctions. It's frontend-only, using a 3rd party API. Written in Elm [3] which has been an absolute joy to work with and has the most helpful online community I've ever seen.

[1] [http://sniper.tasuki/](http://sniper.tasuki/) \- only works with a Handshake-aware DNS resolver [4]

[2] [https://handshake.org/](https://handshake.org/)

[3] [https://elm-lang.org/](https://elm-lang.org/)

[4] [https://www.namebase.io/blog/how-to-access-handshake- domains...](https://www.namebase.io/blog/how-to-access-handshake-domains/)

</comment><comment><USER151> I wrote my first blog post: Sleep Hygiene for Software Engineers!

[https://sklum.github.io/2020/06/14/sleep-hygiene-for- softwar...](https://sklum.github.io/2020/06/14/sleep-hygiene-for-software- engineers.html)

</comment><comment><USER152> I learned Rust by making a simulation of COVID. Shows how herd immunity and exponential growth emerge: [https://github.com/dwarkeshsp/rust-covid- simulation](https://github.com/dwarkeshsp/rust-covid-simulation)

</comment><comment><USER153> BrandBook - a Mac app that makes it easy to share the brand identity of a company with all employees.

[https://apps.apple.com/app/brandbook/id1470289369?mt=12](https://apps.apple.com/app/brandbook/id1470289369?mt=12)

</comment><comment><USER154> I finally started my blog, after putting it off for so long. It's still pretty raw and needs a lot of practice before my writing is really worth sharing, but it's a start.

[https://www.unpublished.xyz](https://www.unpublished.xyz)

<comment><USER155> I enjoyed reading your translation of the excerpt from Nachtzug nach Lissabon. It got me interested in the book.

</comment></comment><comment><USER156> Given the current economic climate, we decided it was time to build a game showing how China works.

Game Story: Little Jinping must pass through cities intercepting messages with no human contact. To prevent detection Jin can collect various artefacts to avoid contact. During the mad dash to his house, Jin must intercept as many messages as possible in order to unlock other cities in his quest for world domination.

[https://apps.apple.com/app/id1510483891](https://apps.apple.com/app/id1510483891)

[https://play.google.com/store/apps/details?id=com.eronka.jin...](https://play.google.com/store/apps/details?id=com.eronka.jinping)

</comment><comment><USER157> I started implementing a version of APL, but that have taken some significant steps away from traditional APL, and introducing features that normally would not be seen as fitting with the language. It's still an experiment, but some of the key features are: immutability, lazy evaluation, first class functions, a macro facility and automatic parallelisation (the last one doesn't really work as well as I would have hoped).

I started the project in January, so I guess this counts?

Here's a video showing what it looks like:

[https://peertube.mastodon.host/videos/watch/4a19ca9e-7ca6-41...](https://peertube.mastodon.host/videos/watch/4a19ca9e-7ca6-4142-bda6-c353915bfe23)

</comment><comment><USER158> Was going to finish some things but got hospitalised for optic neuritis (temporary, almost total loss of vision in one eye) three consequitive times (3 days each, over 3 months) before they (hopefully) stopped it. Its not MS luckily, its 'just' NMO. It's rare as hell. Maybe I should buy a lottery ticket :).

Saying I'm greatfull to the medical staff and the people who stayed home so that the hospital was not flooded and could actually deal with me is an understatement. Also, let's not forget everyone working on the new drugs for MS over the past few decades which is the reason they can even help me today.

So can't wait to get back to coding, but I have to wait for my eye to stabilisea a bit more first.

<comment><USER159> I wish you the best recovery!

</comment></comment><comment><USER160> Hand-curated remote jobs in product & UX, from across the web.

[https://remotivo.com/](https://remotivo.com/)

Of note: the site and its twitter feed ([https://twitter.com/remotivocom](https://twitter.com/remotivocom)) are generated by 2 python scripts which run on a Raspberry Pi under my desk. The 'database' is a Google Sheet and the 'host' is an S3 bucket, both of which are read from and updated every few hours by the Pi.

At the moment scraping is very basic but I'd like to automate that more. Part of the appeal at the moment (I think) is that I check the jobs to ensure they're not scams, are actually remote, etc.

</comment><comment><USER161> A Link to the Past Online

[https://github.com/JamesDunne/alttp- multiplayer/blob/master/...](https://github.com/JamesDunne/alttp- multiplayer/blob/master/README.md#alttp-multiplayer)

</comment><comment><USER162> I'm trying to help my mom's small, offline-only women's fashion boutique move onto the internet. I'm fortunate enough to have a remote job in tech, but their business is significantly disrupted by the lockdown. To help them out, I'm setting up their ebay/esty/shopify/pinterest accounts, taking pictures of the merchandise, doing logo design, etc. Teaching them how to use these platforms' complex UIs and, more broadly, learn how to effectively engage with customers on the internet, are the biggest challenges.

There are loads of businesses in this same boat; I think there's a big opportunity and sense of fulfillment in helping them keep their lights on.

</comment><comment><USER163> I developped a CLI to provide an incremental build to multi-project repositories: [https://github.com/fbecart/zinoma](https://github.com/fbecart/zinoma)

The idea was to pick the best features of Gradle (parallelization, incremental build, dependencies between tasks, clean, watch...) without being tied to the JVM. It is built in Rust with the goal to be an order of magnitude faster than Gradle.

The core features are already functional, and I'm now porting the engine from a thread-based model to an event loop (using Actix).

I am looking for feedback about the project description, documentation, and ergonomy. Feel free to add Github issues or comment existing ones.

</comment><comment><USER164> I created an Open Source (well, that's the intention anyway) online proctoring solution. It records the at-home exam proceedings using a screen capture, the webcam and a side camera (a mobile phone). All web-based.

It doesn't need a streaming server, but clients upload encrypted blocks of video directly to cloud storage instead. So that should make it scale rather easily.

Unfortunately, concerns from students (some of which valid) about the privacy implication of such systems, and a lot of negative press about this, killed the momentum. So it hasn't been used for actual exams (yet).

Feel free to poke around: [https://toetshub.nl/](https://toetshub.nl/)

</comment><comment><USER165> I've been working on a few different things. At the beginning of the lockdown I was super into Animal Crossing so I build [https://ac-catch.com](https://ac- catch.com). I'm happy to say that the site still gets a few thousand visitors every month.

More recently I've been working on a visual React prototyping tool, which has led to a few smaller libraries. The most recent of which is recoil-undo, which is an addon that adds undo support for the Recoil state management library. [https://github.com/SawyerHood/recoil- undo](https://github.com/SawyerHood/recoil-undo)

</comment><comment><USER166> I started a podcast that talks about making music (and related creative stuff) from a more personal and realistic angle than what I've seen available, by interviewing people and asking about their thoughts and process.

A little bit of by-musicians-for-musicians crossed with more general podcast content.

By episode 4 I think we started to hit our stride, as we move towards a more creative-editing system than an unedited live stream format.

We have 3 more coming soon.

[https://m.youtube.com/watch?v=GxIDY9XvvaA](https://m.youtube.com/watch?v=GxIDY9XvvaA)

I've been learning a lot about working on dealing with speaking naturally and clearly, asking the right questions, etc. Its been eye opening.

</comment><comment><USER167> Working on my rogue-like: [https://www.youtube.com/watch?v=TsqMGCWeD6I](https://www.youtube.com/watch?v=TsqMGCWeD6I)

Sadly my client gave me a lot of work last week, little time to work on this side project.

</comment><comment><USER168> I've been working on some VHDL for an FPGA to control a little PCB I made to drive WS2812B lighting strips - [https://www.anfractuosity.com/projects/lightdriver/](https://www.anfractuosity.com/projects/lightdriver/)

It took me a while to get it working as there is a bug with Xilinx Vivado when synthesising my VHDL, where the synthesizer crashes, unless I use a work around which I was told about recently.

I understand you can use MCUs to drive these lighting strips, but was a good excuse to learn more VHDL.

I need to work on an SPI driver now for the FPGA, as I plan to shovel pixel data to it, from a Pi via SPI.

</comment><comment><USER169> I made a web version [0] of the Counter-insurgency board game Andean Abyss [1]. It uses webGL to present a 3D space that holds the board, cards and pieces. Think Tabletop simulator on the web. It encodes the game state into the url so you can send urls to the current board state.

[0]: [https://twitter.com/Ethan_Heilman/status/1274763015129313280](https://twitter.com/Ethan_Heilman/status/1274763015129313280)

[1]: [https://boardgamegeek.com/boardgame/91080/andean- abyss](https://boardgamegeek.com/boardgame/91080/andean-abyss)

</comment><comment><USER170> I've began learning NES development in 6502 assembly, thanks to an online book called Famicom Party [1] and later the Nesdev wiki [2]. Since then I'm trying to make one NES game per month [3]. I don't think it counts as a "product", at least for now.

[1] [https://book.famicom.party/](https://book.famicom.party/)

[2] [http://wiki.nesdev.com/w/index.php/Nesdev_Wiki](http://wiki.nesdev.com/w/index.php/Nesdev_Wiki)

[3] [https://wendelscardua.itch.io/](https://wendelscardua.itch.io/)

</comment><comment><USER171> I released a mobile game and then started working on a DOS first person shooter modifying the Rise of the Triad source code. Even got vintage 486 hardware to make sure it still runs on original specs. It's been a lot of fun so far.

</comment><comment><USER172> Instructions to build yourself a private self-hosted full-stack personal cloud system.

[https://github.com/technomada/cloud-from- scratch](https://github.com/technomada/cloud-from-scratch)

</comment><comment><USER173> We've built a dev dashboard for vscode: so you can do your note taking & your HN reading with minimal context switches.

[https://marquee.activecove.com/](https://marquee.activecove.com/)

</comment><comment><USER174> A new JavaScript/TypeScript bundler written in Go that's 10-100x faster than Webpack, Rollup, and Parcel:

[https://github.com/evanw/esbuild](https://github.com/evanw/esbuild)

</comment><comment><USER175> I made "Ansible Rails" \- a playbook for easily deploying Ruby on Rails applications

[https://github.com/EmailThis/ansible- rails](https://github.com/EmailThis/ansible-rails)

</comment><comment><USER176> [http://www.tweetlights.com](http://www.tweetlights.com) <\- I made this site as a side project when discussing how hard it is to help new followers quickly get up to speed on what you've tweeted about over the years since you can only have 1 pinned tweet. Quick and dirty code here (written in python using flask as well as the requisite javascript scripting for the front end): [https://github.com/dbish/tweetlights](https://github.com/dbish/tweetlights). Site is hosted on AWS Elastic Beanstalk.

</comment><comment><USER177> I digitized a bunch of old VHS home movies and documented the process in case I need to do it again:

[https://github.com/ehrmann/vhs-capture](https://github.com/ehrmann/vhs- capture)

</comment><comment><USER178> Saltcorn, an open-source extensible no-code application platform for the web. Like FileMaker or MS Access, but open source and for the web.

[https://saltcorn.com/](https://saltcorn.com/)

</comment><comment><USER179> I built a significant amount of Bearcatter [0], a control server for the Uniden SDS100 and SDS200 police scanners [1]. A fun little project which got me further experience in dealing with serial and reverse engineering protocols and file formats.

[0]: [https://github.com/Bearcatter/bearcatter](https://github.com/Bearcatter/bearcatter) [1]: [https://uniden.com/products/sds100-true-i-q-x2122-digital- ha...](https://uniden.com/products/sds100-true-i-q-x2122-digital-handheld- scanner)

</comment><comment><USER180> I built the spiritual successor to a multiplayer browser game that I'd made back in 2007. Back then, it was (briefly) the highest traffic Rails app in the world.

The new one is built with Django. It's been a delight doing web work again.

</comment><comment><USER181> I made a deduplicating version control system for large binary file based around the Restic chunker library: [https://github.com/akbarnes/dupver](https://github.com/akbarnes/dupver)

I like to think that this (well, deduplicating version conrol in general, not my crufty project) will be the future of version control and we'll leave the ugliness of git-lfs behind us. For now at least it's a fun project.

Edit: There is an existing project called Boar that does the same thing, though it appears to have been abandoned and is stuck in Python 2

</comment><comment><USER182> Built a self hosted alternative to Google Photos for my family. Will be productionizing it soon.

Here's a sneak peak: [https://youtu.be/b5XN5GMmc6I](https://youtu.be/b5XN5GMmc6I)

<comment><USER183> This looks rad. Any chance of a Github repo that I can star so I don't forget about this?

<comment><USER182> The client code is available here: [https://github.com/ente- io/frame](https://github.com/ente-io/frame)

To be honest and upfront, this won't be a freeware. I'm planning to charge a reasonable one time fee that'll help pay rent. :)

</comment></comment></comment><comment><USER184> I started writing HTTP status code guides for my SaaS business: [https://tryhexadecimal.com/guides/http/](https://tryhexadecimal.com/guides/http/)

A lot of guides on the Internets concerning HTTP status codes are regurgitations or outright ripoffs of RFCs (2616 or 7231). Or light on details.

I want(ed) to go one step further and explain when each code is appropriate (from the website operator's perspective), how to _work around_ some of the errors (mostly for 4xx and 5xx), and some context around HTTP headers/methods.

<comment><USER185> Hexadecimal looks cool. I'm particularly fascinated to hear the reason behind the 16-day tri... ooohhhhhh. _slaps forehead_

</comment></comment><comment><USER186> I made a email dispatcher for web forms hosted on shared hosting providers, like Namecheap. I originally did it for a site my wife did, and then decided to open source it. It's here: [https://github.com/zedr/simple- mailer](https://github.com/zedr/simple-mailer)

I also wrote a blog post on how to install it: [https://medium.com/@zedr/how- to-send-mail-on-namecheap-share...](https://medium.com/@zedr/how-to-send-mail- on-namecheap-shared-hosting-826a37629641)

</comment><comment><USER187> I made a CLI to simplify navigating through directories on the terminal. When I started it I did not know about cdd but in the end it did a lot more than that. I use it everyday and would love it if anyone could give a review. I would love it if I am not the only one using it.

[https://github.com/nsr-py/Teleporter](https://github.com/nsr-py/Teleporter)

I know this a basic project but I also finally started learning web development in this lockdown and target to come back here to talk about a better project than this. Till then, Peace.

</comment><comment><USER188> [https://browserbase.io/](https://browserbase.io/)

I got frustrated with the existing options for running automated QA tests (they are all super expensive) and decided to build my own for a fraction of the cost. It was super interesting as I am not really a developer so it taught me a lot about various programming languages (the frontend is written in Node and the backend is in Go), and so much about infrastructure. It was super rewarding as this is the first side-project that I didn't stop half way through :D

</comment><comment><USER40> I created a new open chat web app called sqwok:

[https://sqwok.im](https://sqwok.im)

The goal is to enable everyone to have their own high-quality, accessible, and shareable chat page on the internet, with features we expect in enterprise chat apps like slack, but geared towards general discussion.

As an example I just created a post with this HN url and we can all talk in live right now, discussing this thread, by joining at the link:

[https://sqwok.im/p/TQGVPI0spX7umg](https://sqwok.im/p/TQGVPI0spX7umg)

<comment><USER189> Pretty clean design. I like the simplicity, who's your target demo?

<comment><USER40> Target demo are people that want to have genuine conversations in realtime about anything on their mind, with absolute ease and simplicity. Discussing news, current events, tech, nature, and science are areas I'd like to promote.

I'm aiming for it to be the "ios" of chat on the web.

</comment></comment></comment><comment><USER190> Starting this week, I'm making daily videos about what I learn while building my bootstrapped startup: [https://histre.com/](https://histre.com/) (Effortless Knowledge Base ~= Automatic Bookmarks)

Here is the Youtube channel: [https://www.youtube.com/channel/UCHkgOonAQd5haT8HHJhpg6g/](https://www.youtube.com/channel/UCHkgOonAQd5haT8HHJhpg6g/)

So far I've talked about:

\- Challenges in Hiring Programmers

\- The Disproportionate Joy of Getting Paid Users

\- Thinking about Competitors

</comment><comment><USER191> I made a "self-hosted wetransfer with audit trails" for use at work. Pretty basic for now, but it's been fun. Hadn't touched _any_ HTML, CSS or JS in over a decade, so I spent some time brushing up on that.

It automatically generates checksums in various formats. It keeps an audit trail of who uploads/downloads what. Enforces a couple of company specific rules. Scheduled expiration of uploads. Nothing too fancy, but it's been a fun distraction.

I'll be trying to open source it once I take out all the company specific stuff.

</comment><comment><USER106> Our company sells SAAS and we are taking our first step into selling services.

A lot of our customers came to us to help them address a growing problem they had coordinating operator assisted conference calls (we offer high touch 24x7 support, that industry does not). We had already put a lot of time into designing a solution but COVID cleared our plate to focus entirely on it. We are ready to go and aim to launch our pilot imminently.

We'll see how things go. Still amazes me how easy it is start a business (In our case a completely new business line) in America.

</comment><comment><USER192> I made a music discovery newsletter that personalizes the newsletter based on the Spotify playlists you follow (and uses a probabilistic model to surface content that you are most likely to enjoy based on those playlists).

Here is the link: [https://whats-spinning.life](https://whats-spinning.life) Here are the most recent issues if you want to check it out: [https://whats- spinning.life/recent/](https://whats-spinning.life/recent/)

</comment><comment><USER172> Many good projects listed here.

Ask HN: What's your quarantine side project?

[https://news.ycombinator.com/item?id=23170881](https://news.ycombinator.com/item?id=23170881)

</comment><comment> nick-garfield My friend and I got really frustrated with existing authentication providers like Auth0, so we decided to create API called Feather to make it easier to add authentication to our web/mobile apps.

[https://feather.id](https://feather.id)

Still quite a work-in-progress.. but currently designing a stateful React library so that you can drop sign-in, sign-up, forgot-password, session- management, etc. into your app with ~10 lines of code. Plus it comes with a nice admin dashboard for user-management built in!

</comment><comment><USER193> I've been creating a tool to make a database of Wikipedia edits Namespace Database [1] and since lockdown I've been making plots of the data! [2] Feel free to ask any questions!

[1] [https://github.com/carlinmack/NamespaceDatabase](https://github.com/carlinmack/NamespaceDatabase)

[2] [https://carlinmack.com/blog/article/wikipediaplots/](https://carlinmack.com/blog/article/wikipediaplots/)

</comment><comment><USER194> Managed to push more videos on my tech youtube channel that are better quality. Wrote 3 movies scripts hoping I can get 3k funding in some way to at least shoot one. Lost all contracts of freelance jobs I used to do. stressed, anxious and depressed and in financial ruin am 20days late in house rent with only 5 bucks and am completely out. Weirdly enough I still smile and laugh at memes and hopeful something will come through even though I dont know what it will be. Mixed feelings and reinventing. End of rant.

</comment><comment><USER195> My brother and I launched a newsletter called Today in Indian History. Four times a week, we lay out the context and consequences of an event in India's past that happened on that date.

[https://honestyisbest.com/today-in-indian- history/](https://honestyisbest.com/today-in-indian-history/)

I also launched a podcast about Computer Science research called Segfault.

[https://honestyisbest.com/segfault](https://honestyisbest.com/segfault)

</comment><comment><USER196> I re-implemented numpy in golang just for learning.

[https://github.com/praveenpenumaka/numpygo](https://github.com/praveenpenumaka/numpygo)

</comment><comment><USER197> I started playing Rocket League. Now I'm on gold ranks throughout every compatitive game modes, though on varying levels (1 to 3). It was equaly satisfying like learning a new language or instrument. The controlls fall into the typical "easy to learn, hard to master" category and the advanced techniques require an immense amount of time to nail consistantly (I'm far from that, btw). But it was fun and I alwayse played together with friends, so it had a huge social factor too :)

</comment><comment><USER198> I started a freestyle newsletter for sharing knowledge I get from the internet.

Quickly I reaized the existing solutions are limited. So I started developing my own Email Platform, which is in early stage currently and can only send dynamic mails for now but I plan to grow it into a single blogging cum newsletter platform going forward. The project isn't online yet but my newsletter is: [https://linktr.ee/Knowledgeday](https://linktr.ee/Knowledgeday)

</comment><comment><USER199> I made an attachment for my Ender 3 3D printer that allowed me to turn it into a pen plotter and draw with ink (and other) pens. I've played around with different code to create images (photo->gcode) and made a new youtube channel for the drawings and a bit of behind the scenes of how they're made: [https://www.youtube.com/channel/UCfqDAVieav- UOIEAlDXsovQ](https://www.youtube.com/channel/UCfqDAVieav-UOIEAlDXsovQ)

</comment><comment><USER200> I made Autotable, a tabletop simulator for Riichi Mahjong: [https://pwmarcz.pl/autotable/about.html](https://pwmarcz.pl/autotable/about.html)

I wanted to play with my friends the way we used to in real life. It ended up being a very interesting and rewarding project.

Here is a blog post about developing the game: [https://pwmarcz.pl/blog/autotable/](https://pwmarcz.pl/blog/autotable/)

</comment><comment><USER201> I've been slowly designing, engineering, coding, and 3D printing a 2D Plotter (a printer you can code) [https://hackaday.io/project/171536-diy-2d-plotter](https://hackaday.io/project/171536-diy-2d-plotter)

I launched a Twitch stream: [https://www.twitch.tv/travis_the_maker](https://www.twitch.tv/travis_the_maker)

I also refactored/updated my engineering and photography portfolios.

</comment><comment> 100-xyz [https://Toonclip.com](https://Toonclip.com) was released first here on HN about 6 months resulting in a huge spike in traffic that crashed the server twice.

During the lockdown, I created a simple English syntax to control the animation and ability to export in Gif and WebM format.

Here is one with Michael Sielbel of YC [https://toonclip.com/player?key1=802d8d51ec](https://toonclip.com/player?key1=802d8d51ec)

</comment><comment><USER202> I've caught the Single Board Computer bug. So I've made 2 Lakka boxes and one RetroPie as gifts for family. In hindsight: Lakka on a Pi is awful, avoid it at all costs.

Also a pi4 running a MineTest and Mumble server. Basically tought me the ins and outs of adminning a linux box.

My adventures in computing are on my blog: [https://www.pxtl.ca](https://www.pxtl.ca) \- haven't blogged my retrogaming stuff yet, but have blogged the server stuff.

</comment><comment><USER127> Pet Detector, an Android app using machine learning to catch various animals if they stray in front of the camera lens. The app then takes a photo and/or plays a warning sound.

Also made my first CV in 20 years because I need a second job to pay back all the money I'm losing - I previously made my living mainly from entertainment at large events...

[https://www.circusscientist.com/cv/](https://www.circusscientist.com/cv/)

</comment><comment><USER92> I've been working on a software rasterizer in C: [https://git.sr.ht/~zjm/Moon3D](https://git.sr.ht/~zjm/Moon3D). Coming from a web background, it's been super fun! I just wish I had more time to keep working on it. I've been experimenting with tweeting my progress on it: [https://twitter.com/zackmichener](https://twitter.com/zackmichener)

</comment><comment><USER203> We launched XgeneCloud[1]

XgeneCloud instantly generates REST/GraphQL APIs on any SQL Database. The APIs scaffolded is a secure node.js backend application. XgeneCloud currently supports generating REST/GraphQL APIs over MySQL, PostgreSQL, SQL Server, SQLite, MariaDB and Aurora.

Please do check us out - we've been getting amazing feedback.

[1] : [https://github.com/xgenecloud/xgenecloud](https://github.com/xgenecloud/xgenecloud)

</comment><comment><USER204> It's simple, but essentially I built a super simple landing page and pay wall for any live class or any other link or digital good. My friend is a yoga instructor and wanted something more simple than her existing setup.

Mostly have yoga instructors on the platform currently and am thinking about other product enhancements geared towards online instructors and classes.

Check it out here: [http://classup.io/](http://classup.io/)

<comment><USER205> You should consider bundling video yourself and charging for it. Could use something like Mux.com to power it without much trouble.

<comment><USER204> Thanks for this feedback, was just researching options, including Mux for video, and have been speaking to existing instructors to see if they're willing to jump to a new video platform.

Some teachers like Zoom to facilitate Q&A, chat etc., but there might be enough that simply want the all-in solution to make the jump.

Thanks again!

</comment></comment></comment><comment><USER206> Two simple toys (calling them games is a bit too much) in Godot engine:

[https://git.sr.ht/~sforman/Yengapult](https://git.sr.ht/~sforman/Yengapult) Knock down a tower with a catapult.

[https://git.sr.ht/~sforman/SpaceGame](https://git.sr.ht/~sforman/SpaceGame) Fly a spaceship around an asteroid belt.

Godot engine is lots of fun (and so much easier than e.g. Unity.)

</comment><comment><USER207> I built an app for peer to peer lending boardgames between users.

I'm more of a backend/data engineer so this was my first attempt at front end dev with react native. Was pretty fun to build and see whole app come together to an MVP, but I don't know whether I'll launch it for real. Shipping costs from lender to borrower and back drive the price too high to make it feasible I think.

Lesson here is fully assess costs and price points before you start to build!

</comment><comment><USER208> I started TextRewrite [1], a SaaS/API to automatically rewrite sentences without changing the meaning. SEOs use this to create unique content. Could also be used by students to cheat but I'm not encouraging this. Works in any language, uses AI. (Signup link is not yet working but you can email me if you want to give it a try.)

[1] [https://www.textrewrite.com/](https://www.textrewrite.com/)

</comment><comment><USER209> I made Qwickly: An alternative keyboard layout that is the easiest to learn and faster than Dvorak.

Close enough to the fastest to not matter.

[https://github.com/qwickly-org/Qwickly](https://github.com/qwickly- org/Qwickly)

[https://blog.keithkim.org/opensource/making-the-qwickest- key...](https://blog.keithkim.org/opensource/making-the-qwickest-keyboard- layout)

</comment><comment><USER210> I came up with a bad way to share files. It's a website that takes a file, encodes it into a series of URL parameters, and then allows you to put them back together again. (it's really only practical for small text files)

[https://podje.li/](https://podje.li/)

[https://github.com/willcipriano/Podje.li](https://github.com/willcipriano/Podje.li)

<comment><USER211> This is really cool! How did you do the encoding though?

<comment><USER210> Thank you! Most of the heavy lifting is done by the lz-string library[0], the compression works well for small text files, sometimes the URL out will be shorter than the input in that case. Things like images work out to be hundreds of URLs unfortunately.

[0][https://pieroxy.net/blog/pages/lz- string/index.html](https://pieroxy.net/blog/pages/lz-string/index.html)

<comment><USER211> Cool! Yeah I tried a pdf and it generated a bunch of URLs ;)

</comment></comment></comment></comment><comment><USER212> I've been following this book to learn how to parse/interpret/compile languages: [https://craftinginterpreters.com/](https://craftinginterpreters.com/)

And started designing and implementing my own pure-functional, JavaScript- targeted language with features like built-in partial-application of arguments, and every function being able to be called in a prefix, infix, or pipeline style

</comment><comment><USER213> Deployed a web app that I've been working on for a few years:

[https://codeexplainer.org](https://codeexplainer.org)

It's an educational application to teach the basics of coding syntax to beginners. I'm not quite finished with all the parsed explanations, but I try to get a little bit done every day.

Hopefully in the future I can add more languages and explain 'sentences' instead of just 'words'.

</comment><comment><USER214> I built an Alexa skill that sits in front of the local council's website (South Worcestershire, UK) and tells me which set of bins go out this week. Have already probably saved myself more time from looking up the website manually than it took to build the skill. Code at [https://github.com/morgan- murray/bin-day](https://github.com/morgan-murray/bin-day)

</comment><comment><USER215> I made 2 things:

I made a website for friends and family to play poker online. [https://playcards.live](https://playcards.live). No cards or chips required. Works on any devices.

I parsed en.wikipedia using AI and extracted events, time and location: [https://whataday.info](https://whataday.info). Given an event, it shows you what was happening closeby, in spacetime.

</comment><comment><USER216> I made carwala ([https://www.carwala.co](https://www.carwala.co)) - an easy and secure way for people to contact you if anything happens to your car.

You sign up with your phone number, add some details about your car and purchase a membership. We send you a high quality windshield decal that people can scan to contact you if you need to move your car, or if your car has been broken into, etc.

</comment><comment><USER217> I tried to make a CLI using GO, that would act as bookmark for bash scripts. With the intention of having an online repo from where u can easily install other scripts.

[https://github.com/bogdan-largeanu/zing](https://github.com/bogdan- largeanu/zing)

I kinda have become a bit discouraged now since most of my colleagues are not into GO so it is hard to find people to learn and talk about it.

</comment><comment><USER218> Finished Metalens v1.0, Hacker News iOS client with some extra bells and whistles.

[https://www.3am.engineering/2020/05/metalens-for-hacker- news...](https://www.3am.engineering/2020/05/metalens-for-hacker-news/)

Got into woodworking, it really helps with anxiety. Built some outdoor/patio furniture, got a few more tools and started doing some more advanced indoor stuff.

</comment><comment><USER219> Implemented the Redis API on DynamoDB. Very interesting experience because I learnt a lot about Dynamo, and now have a 0-infinity autoscaling system ready for for my other side projects and consulting apps. The Dynamo API is pretty low level and arcane, but Redis is a nice sweet spot that makes sense to me for modeling.

[https://dbproject.red/redimo](https://dbproject.red/redimo)

</comment><comment><USER220> I made [https://devblogs.co](https://devblogs.co). This is a feed of engineering blogs from high tech companies. Going to launch a newsletter soon. Also, I started working on my own tool for time-management - [https://prrro.herokuapp.com](https://prrro.herokuapp.com), but abandoned it for now. Hope will resume it later.

</comment><comment><USER221> I got a good bit of work in on [https://github.com/runekaagaard/hypergen](https://github.com/runekaagaard/hypergen) (a Python liveview) and [https://github.com/runekaagaard/django- treeform](https://github.com/runekaagaard/django-treeform) (a declarative data transformation tool).

</comment><comment><USER222> I made a way to visualize options portfolio profitability as a function of various portfolio parameters. I was craving a visual intuition for how options leg parameters (strike price, expiration, put/call, short/long, quantity). As a fun side note, the computation of portfolio value happens on the GPU!

[https://rainbowoptions.club/](https://rainbowoptions.club/)

</comment><comment><USER7> I've been working on a Powered Air Purifying Respirator at [https://airtoall.org/products/papr/](https://airtoall.org/products/papr/). Our goal is to release a cheap (you can't get certified if you don't sell it) and open device that is niosh certified and thus usable. Currently working on our manufacturing prototype.

</comment><comment><USER223> I improved a small game I have created a few years ago [https://www.freememorygame.com](https://www.freememorygame.com) . added a few features and it became very popular during quarantine time for kids and pre- school to play online with their tutors and teachers. It is a memory and matching card game you can build and create using your own uploaded photos.

</comment><comment><USER224> I'm in Florida so lockdown is still a thing, or will be again soon.

I'm creating a coding language for UI designers. It's kind of like pseudo code in that it's not tied to any one implementation (platform). The basic idea is that designers will have a platform-agnostic language to describe the visual behavior of applications using the same terminology and mental models that they're familiar with.

<comment><USER185> That sounds fantastic! Got a link? Even if there's nothing demo-able yet, I'd like to star your repo (assuming it's on Github) so I get release updates.

<comment><USER224> Thanks! I do have a (still private) repo that I will be making public eventually. My plan was to finish the white paper and initial draft of the spec, but I might be able to pull something small together in the next few days. I'll ping when it's ready!

<comment><USER224> edit: while the repo itself is private, the org is public: [https://github.com/matry](https://github.com/matry)

</comment></comment></comment></comment><comment><USER225> I started a newsletter on how to raise money from VC, PE, and family offices.

I'm in the process of releasing the first publications to discuss the fundraising process as well as how to find, contact and handle oneself with such organizations.

Feel free to get updates upon release here: [https://familycapital.ck.page/1838069523](https://familycapital.ck.page/1838069523)

</comment><comment><USER226> I'm working on [https://remoteleaf.com](https://remoteleaf.com) during this lockdown to help people land remote jobs.

\- Created a dashboard for people who lost their jobs due to COVID -> [https://app.remoteleaf.com/covid](https://app.remoteleaf.com/covid)

\- Working on an initiative to help Black tech people to land jobs.

</comment><comment><USER227> Daily math practice at [https://arcadejack.com](https://arcadejack.com)

ShowHN briefly made it to top #8 on front page.

</comment><comment><USER228> Got round to updating my YouTube channel more regularly and finally finished off a project that has been on the back burner forever. Managed to actually ship on time for my wife's birthday.

It's all powered by an ESP32 on a custom PCB that I designed and built with a web based UI that is hosted on the device.

[https://youtu.be/3wEAKVvzJyA](https://youtu.be/3wEAKVvzJyA)

<comment><USER229> Awesome work!

</comment></comment><comment><USER230> Browserboard ([https://browserboard.com](https://browserboard.com)), a multiuser whiteboard. It's a crowded space (excalidraw, awwapp, miro, freehand, etc.) but I think it's pretty good! There are lots of fiddly technical details that go into smooth drawing, good performance with lots of objects, erasers that behave properly, etc.

</comment><comment><USER231> I'm still working on it but began learning Swift and SwiftUI dev (I'm a designer by day) and making my first iOS app: a basic stocks tracking app (and lets you input your purchases to see value over time)

[https://twitter.com/Stammy/status/1258404361232883712](https://twitter.com/Stammy/status/1258404361232883712)

</comment><comment><USER232> Still work in progress, but I started identifying local flowers [https://mdoliwa.com/projects/plants.html](https://mdoliwa.com/projects/plants.html) I'm using plantnet app to help me with it.

It's super cool and I recommend it to everyone. I feel like I'm treasure hunting every time I go for a walk now :)

</comment><comment><USER233> I started reading more about Native Web Components and wanted to see if I could tie them to observables using MobX so I wrote a library to do just that, using VueJS-like template bindings. It works pretty well, feedback is definitely welcome.

[https://github.com/agquick/elemx.js](https://github.com/agquick/elemx.js)

</comment><comment><USER234> This is cool - glad to see lots of folks being productive!

I got a bunch of great feedback from another HN thread, so I'll leave my new lockdown company here as well (I also submitted it on your site) - [https://coopersdogtreats.com/](https://coopersdogtreats.com/), where we make healthy, meat-based frozen dog treat mix.

</comment><comment><USER235> An api for open elevation data:

[https://www.opentopodata.org/](https://www.opentopodata.org/)

</comment><comment><USER236> I made Portabella ([https://portabella.io](https://portabella.io)), an end to end encrypted project management solution, Trello or Asana are the main competitors.

It started as a simple e2ee todo list and kind of spiraled from there, now I've incorporated, am planning Gantt charts, thinking of quitting my job...

</comment><comment><USER237> I'm building an app for sharing markdown docs out of git repositories.

Add a repository and select the branch you want to read from and it will grab the markdown files, store them and provide a table of contents and reader view.

[https://gitdocs.page](https://gitdocs.page)

Still in heavy beta, and currently supports github and azure devops repos.

</comment><comment><USER238> [https://mexicantrain.online](https://mexicantrain.online)

An online version of the dominoes-based game, Mexican Train. It's a big hit with retirees (and our family). We're up to 100 games/day and daily I get emails from older people in quarantine thanking me for it. It's been really rewarding.

</comment><comment><USER239> I re-released an old Action-RTS game onto Kongregate where it's been played 45k times so far. I started a mailing list for a sequel which already has over 200 signups!

[https://www.kongregate.com/games/Frenchie14/factions](https://www.kongregate.com/games/Frenchie14/factions)

</comment><comment><USER240> I made a timer for functional workouts - includes timers for different types of workouts (AMRPAP, EMOM, etc) and you can combine them to create a full workout. Got around 15 people / day using, not much but a fun side-project :D. [https://www.wodblocks.com](https://www.wodblocks.com)

</comment><comment><USER241> I made a CLI for controlling macOS's "Night Shift" feature programmatically. It also doubles as a Rust library.

[https://github.com/smudge/nightlight](https://github.com/smudge/nightlight)

Now I'm working on cross-system compatibility with equivalent features on Windows and Linux.

</comment><comment><USER242> I started writing daily: exploring different things, but particularly asyncio and event loops. Also built a small library to visualize python code execution (to be open sourced soon).

[https://explog.in/notes/100days.html#org0b7f5fd](https://explog.in/notes/100days.html#org0b7f5fd)

</comment><comment><USER114> I launched my first webapp [https://taaalk.co](https://taaalk.co). It's a platform for public text-based conversations. It's been great so far, I've gotten to know very interesting people and things through having discussions on it. (Anyone can make a Taaalk though.)

<comment><USER243> Curious to know how you went about getting new users on the platform!

<comment><USER114> Hey, I have just been reaching out to people when I come across a blog post or a community discussing topics I'm interested in. It hasn't been easy to get Taaalks started by people who are not me though... if that happens I'll be very happy. Can you think of anyone you would be interested to Taaalk to?

</comment></comment></comment><comment><USER244> Made my balcony private using fake bamboo.

Made a pond.

Made a Japanese-style bridge for the pond.

Made a water wheel for the pond.

Made a garden gate.

Marked up my CV (resume) and weirdly that led to a new job.

</comment><comment><USER245> I'm not a good programmer by any chance, but somehow I managed to make an app in Unity for people playing Warzone.

[https://play.google.com/store/apps/details?id=com.LuckyLoser...](https://play.google.com/store/apps/details?id=com.LuckyLoserCX.WARZONEHELPER)

</comment><comment><USER246> I made a BASIC interpreter, in Rust, with a web interface. The goal is to have a simple environment with which to teach programming to my kids. Still very limited but already sparked some interest!

[https://jmmv.github.io/endbasic/](https://jmmv.github.io/endbasic/)

</comment><comment><USER247> [https://github.com/marenbeam/thoughts](https://github.com/marenbeam/thoughts)

I made a portable shell program for making short text posts from vim.

The code's not perfect, but it does what I want from such a thing, and I'm enjoying using it and seeing others use it too!

</comment><comment><USER248> I worked upon restarting and improving an existing driver for Final Fanhtasy VII and Final Fantasy VIII on PC, which fixes ton of bugs and improves modding capabilities by making them look better and load faster :)

The project is fully FOSS and licensed with GPLv3 ( inherited from the original author ).

Feel free to checkout it here: [redacted]

</comment><comment><USER249> This isn't an "incredible thing" but it's a fun project I accomplished this week: single-file python package that lets you disable assertions in files or modules.

[https://github.com/boothby/dissert](https://github.com/boothby/dissert)

</comment><comment><USER250> Designed a camera system that is likely to end up on the moon within the next four years (NASA Artemis Mission). To be fair, there's a solid year of additional engineering that needs to go into this. The bulk of the engineering was done during lockdown. Now it's time to test and iterate.

</comment><comment><USER251> I made a website to watch videos and livestreams without distractions; outline.com for videos.

Add layluh.com before any YouTube, Vimeo, or Twitch URL (layluh.com/URL).

Here's a vid: [https://www.layluh.com/watch?v=izxXGuVL21o](https://www.layluh.com/watch?v=izxXGuVL21o)

</comment><comment><USER252> We completely rebuild the frontend of our app [1] to focus on keyboard input. It was just released and I am quite happy with it.

[1] [https://emvi.com/blog/product-update- june-2020-0DdK57ngZ2](https://emvi.com/blog/product-update- june-2020-0DdK57ngZ2)

</comment><comment><USER253> Finished my open source Virtual Reality fitness game VRWorkout (done completely in Godot)

The nice side effect is that developing a fitness game is a fitness exercise in and of itself, and a lot cheaper than the monthly $20 Supernatural plan

[https://vrworkout.at](https://vrworkout.at)

<comment><USER254> Damn looks sick... I need to try it out

<comment><USER253> Please do, it's not completely finished yet but I am using it for my own daily workout. If you don't have a Quest it will work with PC VR headset as well, although you will either need to strap the controllers to your wrists or put the controllers down when you do the pushups (not very comfortable)

<comment><USER254> Yup... I do have a quest

</comment></comment></comment></comment><comment><USER255> I contributed to the GraphQL python client gql (I implemented the websockets transport to allow GraphQL subscriptions using asyncio)

[https://github.com/graphql-python/gql/pull/70](https://github.com/graphql- python/gql/pull/70)

</comment><comment><USER256> Finally launched Newsy.

[https://www.newsy.co](https://www.newsy.co)

I had lots of un-used domains and wanted to make use of them without having to maintain them. So I decided to make a tool that turns un-used domains into a content-aggregator like Reddit, except, it runs itself. :)

</comment><comment><USER257> I finished the website for my open source library to simulate water distribution networks, epanet-js.

Can't imagine there are too many civil engineers here specializing in water modelling, it's a pretty niche field!

[https://epanetjs.com/](https://epanetjs.com/)

</comment><comment><USER258> [https://www.hopupon.com](https://www.hopupon.com)

HopUpon is a Cheap Multi-City Flight Generator that allows you to explore new cities as you "hop" along to your destination. Our algorithm creates itineraries that are often cheaper than a direct flight.

</comment><comment><USER259> Never miss an important email ever again. I needed an app that would trigger a phone call whenever I received an important email, but without giving the app full access to my mailbox.

So I built one myself, meet Wakingg; [https://wakingg.com](https://wakingg.com)

</comment><comment><USER260> I've build [https://TimeForMe.Today](https://TimeForMe.Today), a service which let's you find well-being sessions taking place online.

I tested it with a few different communities and realized people aren't interested. It was a good experiment.

</comment><comment><USER261> We (instructors and students) brought a media art exhibition [1] online, that usually is happening in a Museum. The students did such a tremendous job although no technical backgrounds. [1] [https://medienkultur.eu](https://medienkultur.eu)

</comment><comment><USER262> Thanks for sharing this! During the lockdown I shipped "Storylocks"; it's a place for fiction authors to write stories together in a serialized format.

Let me know what you think!

[https://www.storylocks.com?source=hn](https://www.storylocks.com?source=hn)

</comment><comment><USER263> I built a little website for being able to ask a question to a doctor easily: [https://dokami.be](https://dokami.be). (It's only in french for now)

I always felt it was missing and I also wanted to learn a bit again about frontend/backend dev.

</comment><comment><USER264> I'm making a politically charged game based on Brazil's scenario. It's been fun and rewarding. [https://www.newgrounds.com/portal/view/750869](https://www.newgrounds.com/portal/view/750869)

</comment><comment><USER265> I lost all energy to work on my ongoing Big Projects and ended up doing a lot of furry porn commissions.

</comment><comment><USER266> A ghost Blog where entrepreneurs, AI engineers and coders from across the world introduce their work to beginners.

It has a clean UI just like Medium and in fact we opened up all our Medium content for free on this blog.

[https://aigraduate.com](https://aigraduate.com)

</comment><comment><USER267> Do incomplete projects count?

I wrote 1/3 of a novel called "Distanced" \- you can read it at [https://1drv.ms/w/s!AhRJSX2EIeTqmohIQPPIaNr6TXMnnw?e=rwfXfE](https://1drv.ms/w/s!AhRJSX2EIeTqmohIQPPIaNr6TXMnnw?e=rwfXfE).

</comment><comment><USER268> I've been working on a stock portfolio visualizer - [https://stonksfolio.com](https://stonksfolio.com). It's still in heavy development but it's already useful to me and to a bunch of other people who started using it.

</comment><comment><USER269> Argos Translate, an open source Python application for translating between languages locally without an internet connection.

[https://github.com/argosopentech/argos- translate](https://github.com/argosopentech/argos-translate)

</comment><comment><USER270> I made one web artwork a day during 35 days. [https://evasive.tech/](https://evasive.tech/) It was exhausting. It had an article in a national newspaper and it is now being exhibited in net art online exhibitions.

</comment><comment><USER271> My friend and I run product and engineering respectively at a 500+ person "startup."

We kicked off a blog during lockdown to share what we've learned over the years. Hope you enjoy it!

[https://staysaasy.com/](https://staysaasy.com/)

<comment><USER97> Stumbled across your blog somewhere and have really enjoyed some of the posts you've written so far. Keep it up!

<comment><USER271> Thanks, really glad to hear that! Always really encouraging to hear that folks out there are enjoying it. We write 1-2 posts a week so check back as we have quite a bit more content coming.

</comment></comment></comment><comment><USER272> I made a affiliate app to scratch a personal itch for myself.

Basically for generating affiliate URLs and redirecting to the relevant store based on IP Geo location. It's very basic and has only a CLI interface for now but was a good learning with some terraform, ansible, and PHP.

</comment><comment><USER273> I returned to creating music on an MPC after an 8 year hiatus. I'm loving being back at it again.

</comment><comment><USER274> I worked on a desktop app to create step by step guides and tutorials. Perfect solution for easily creating visual documentation and use guides [https://folge.me](https://folge.me) . Would love to hear any feedback!

</comment><comment><USER275> I made a little theme for Typora, a great markdown editor, to match my other color schemes used in other apps:

[https://github.com/kinoute/typora-hivacruz- theme](https://github.com/kinoute/typora-hivacruz-theme)

</comment><comment><USER276> A simple, minimalistic and beautiful Diet Log android app. [https://play.google.com/store/apps/details?id=com.lilbite.ai](https://play.google.com/store/apps/details?id=com.lilbite.ai)

</comment><comment><USER277> Started already before to work on [https://getworkrecognized.com/](https://getworkrecognized.com/) but it is now in a much more mature state - An app to track your work and create perfect Self-Reviews.

</comment><comment><USER278> I've been building out a fuzzy reverse image search API - [https://siev.io](https://siev.io)

The code is more-or-less functioning at the moment, now I'm finding ways to index more images faster to increase its coverage.

</comment><comment><USER279> I made V.O.B.S., a system that lets you produce interactive TV shows using the internet as a transport medium, multiple webcams in different locations and our server infrastructure.

[https://vobs.io/](https://vobs.io/)

</comment><comment><USER280> I did an analysis of the last year and a half of my sleep data from the Oura ring

[https://jackmcgeary.com/how-an-mlb-season-affects-sleep- part...](https://jackmcgeary.com/how-an-mlb-season-affects-sleep-part-1/)

</comment><comment><USER281> I built an education site teaching how to build apps and websites without code: www.nocode.mba

<comment><USER282> but if MBAs can make apps without coders, who is going to ask coders to build their ideas for free?

</comment></comment><comment><USER243> I've always been interested in what podcasts other listen to and what they think about it, so I built a website to comment on podcasts!

Check it out! [http://www.sharedmic.com/](http://www.sharedmic.com/)

</comment><comment><USER283> An --inch polyfill library to help browsers understand real physical units like inch, centimeters, millimeters, thou, feet etc.

[https://github.com/bookiza/\--inch](https://github.com/bookiza/--inch)

</comment><comment><USER284> I created a web-based video player that adds a slit-scanning 3D effect ( using the edge pixels )

[https://github.com/joeycato/boundlessvideoplayer](https://github.com/joeycato/boundlessvideoplayer)

</comment><comment><USER285> [https://currentevents.email](https://currentevents.email)

It's simply Wikipedia's current events each day, emailed to your inbox. I prefer email more than RSS, but also it was nice to do a small, discrete project

</comment><comment><USER286> Building Prometheus alertmanager gateway to Jabber, to receive alerts on on- premises deployed jabber server, to have full control over monitoring and alering infrastructure; also learning Go with it . Thinking about turning this into SaaS )

</comment><comment><USER287> Person sends picture, and this gets the location info from picture. It auto- responds the info. Am making a chat-like responder to request various things like a URL to mapping, and maybe OCR any words.

Send picture, with GPS enabled, to (+1) 408-471-5200.

</comment><comment><USER288> I graduated from university.

I just made a starlink coverage map: [https://droid.cafe/starlink](https://droid.cafe/starlink)

I started working at a job.

I've made quite a bit of progress on a game, but it's on pause for now.

</comment><comment><USER289> I finished my automated micro-training generation tool, that I used a lot myself, but wanted to see if others find it useful [https://Quizrecall.com/](https://Quizrecall.com/)

</comment><comment><USER290> I finished and released my design for a small 3d printed drawing robot that runs MicroPython.

[https://github.com/russhughes/turtleplotbot3](https://github.com/russhughes/turtleplotbot3)

</comment><comment><USER291> I made a code base visualizer for Javascript, Typescript, and Python. Functions are shown as nodes, while function calls are lines connecting nodes.

[https://codemap.app](https://codemap.app)

Any feedback is welcome :)

</comment><comment><USER292> Not completed yet, but I am working on Stocklist ([https://stocklist.live](https://stocklist.live)). One can create, share and follow collection of stocks from all over the world.

</comment><comment><USER293> [https://StuckAtFuckingHome.com](https://StuckAtFuckingHome.com) \- something to help me get through lockdown, finding content to be entertained by and games to to play with friends

</comment><comment><USER294> Neumorphic design generator, launched today: [https://www.producthunt.com/posts/neumorphic- generator](https://www.producthunt.com/posts/neumorphic-generator)

</comment><comment><USER295> I started [https://www.programmerweekly.com/](https://www.programmerweekly.com/) \- A free weekly newsletter featuring the best hand curated links for programmers.

</comment><comment><USER296> I managed to launch a company.

</comment><comment><USER297> Very cool site... Just discovered this [https://coronaflix.com/](https://coronaflix.com/)

It's not updated at all. This site could be MUCH better but a great idea overalll

</comment><comment><USER298> I've been making music, and especially investigated random / stochastic music with a structure:

[https://fligenstein.bandcamp.com/](https://fligenstein.bandcamp.com/)

</comment><comment><USER299> I built a SaaS for helping business owners stay on top of website and Internet security and best practices: [https://domainproactive.com](https://domainproactive.com)

</comment><comment><USER300> [https://boards.kenforthewin.com](https://boards.kenforthewin.com)

A sort of live reddit-like app with RSS syncing support. In its very early stages (I don't even have a name yet)

</comment><comment><USER301> Created an app that does a Google Lighthouse test of your website every night. And you get an email overview every week.

It's free for now.

[https://pages100.com/](https://pages100.com/)

</comment><comment><USER302> I work from home always, so only difference was that my work was much less productive with children around and limited shopping hours just in time when I have time to do it without messing with my work schedule

</comment><comment><USER303> I built a website to help new moms & dads to save money on diapers [https://www.babydiaperdeals.com](https://www.babydiaperdeals.com) using Amazon PAAPI-5.

</comment><comment><USER304> Learned a bit about how database are implemented and shared the learnings in a series of projects, [https://dbfromzero.com/](https://dbfromzero.com/)

</comment><comment><USER305> Started on a alternative for pinterest/tumblr

[https://collect.cat/](https://collect.cat/)

But work picked up sooner than expected.

Its fine for personal use atm but missing lots of features

</comment><comment><USER306> We built a free educational live streaming platform that connects kids with the best teachers: [https://dexter.live/](https://dexter.live/)

</comment><comment><USER307> my first fugue [https://soundcloud.com/peter-mullen-2/babys-first- fugue](https://soundcloud.com/peter-mullen-2/babys-first-fugue)

</comment><comment> mickael-kerjean Filestash ([https://www.filestash.app](https://www.filestash.app)) which is inspired by the infamous FTP comment from when Dropbox first launch on HN

</comment><comment><USER308> I have been making videos with my daughter on how to teach kids programming in Scratch.

Its a lot of fun going through the whole process. She is learning practical skills that may be useful in this day and age.

</comment><comment><USER309> Released a Creative Commons boardgame free for all

[https://www.tomcooks.com/projects/snipr/](https://www.tomcooks.com/projects/snipr/)

</comment><comment><USER310> I made an interactive map to show the progression of the virus day over day. [https://coronaprogress.com/](https://coronaprogress.com/)

</comment><comment><USER311> I made Messagink, it lets you create and publish text stories for free: [https://messagink.com/](https://messagink.com/)

</comment><comment><USER312> I learned how to handle a civil dispute through a lawyer. I was not intending to spend the time and money to learn this.

Would have been nice to have a boring lockdown. Maybe during round 2.

</comment><comment><USER313> I made a database of T-box riboswitches: [https://tbdb.io](https://tbdb.io)

This gave me a big opportunity to improve my bioinformatic skills.

</comment><comment><USER314> I revamped my blog and wrote two blog posts for the Product Management community - [https://akshayd.in](https://akshayd.in)

</comment><comment><USER315> I built a way to block slack notifications automatically based on your work state (Eg. Focused, in a meeting, on a call). It integrates with your calendar and desktop apps.

Holopod.com

</comment><comment><USER316> A... game?

[http://fauna.computerpho.be](http://fauna.computerpho.be)

Still not certain where it's going, but it has but fun getting this far with it

</comment><comment><USER317> I wrote a little web app for making and using checklists. [https://checkfox.app/](https://checkfox.app/)

</comment><comment><USER318> I created A database of employee benefits remote companies offer. [https://officefree.io](https://officefree.io)

</comment><comment><USER319> A tunneling service for self hosting game servers: [https://playit.gg](https://playit.gg)

Has a decent little following right now.

</comment><comment><USER320> I combined a few cool search techniques and an interactive process to make a tool to discover the most relevant hashtags for posts on Instagram: gravtag.com

</comment><comment><USER321> I made an open-source error tracking and website analytics platform [https://logowl.io](https://logowl.io)

</comment><comment><USER322> Added a ton of features and integration tests to my project:

[https://fastcomments.com/](https://fastcomments.com/)

<comment><USER323> I had thought about making something like this in the past. Really like the execution. Hope you are finding your audience and getting a sustainable business going, the world needs more of these.

<comment><USER322> I hope so too! So far all the customers I've gotten have been amazing to work with as well. My target is one new customer a day, but so far that's been really hard.

</comment></comment></comment><comment><USER324> Making hand sanitizer from raw ingredients. Added some raspberry pi/nodered and esp8266/tasmota for process control. Has been a ton of fun.

</comment><comment><USER325> I made a web app that visualizes the COVID-19 data: [https://covid19.evrim.io](https://covid19.evrim.io)

</comment><comment><USER326> I made a Vim-like editor for building webpages quickly. [https://vivpage.com](https://vivpage.com)

</comment><comment><USER327> I made myself a new portfolio website in case I get made redundant...

[http://plackett.co.uk](http://plackett.co.uk)

Feedback welcome!

</comment><comment><USER328> Simple website click statistics tool: [https://clickradar.io/](https://clickradar.io/)

</comment><comment><USER329> WOWidget: iOS app to create custom widgets.

[https://www.wowidget.com/](https://www.wowidget.com/)

</comment><comment><USER330> I made a Link, Story and Photo sharing community.

[https://20-things.com/](https://20-things.com/)

<comment><USER40> nice! how will you promote it to find initial users? who is the target audience?

<comment><USER330> Thanks! I am hoping that it will be used by people who wish to have a meaningful conversation with internet strangers, people who desire to learn from others and share their knowledge, people who are fascinated by the unknowns of our universe... So far I am the only one actively using it (I built instagram-like feature so I use it as personal photo sharing tool as well) and quite honestly I don't expect it to ever take off, but who knows, people may get fed up with other mainstream communities and migrate to lesser known alternatives like 20-things. I would be more than happy if in the end 100 people used it actively every day. It could also be useful as a tool for others to self-host and I may later open-source it if there is enough interest. Thanks again for checking it out :)

</comment></comment></comment><comment><USER331> I've created an app to gamify social distancing.

[https://www.solocoin.app](https://www.solocoin.app)

</comment><comment><USER332> I made a podcast aggregator and recommender. [https://podhound.co](https://podhound.co)

</comment><comment><USER333> [https://officestatus.fyi](https://officestatus.fyi) (mostly no-code tho)

</comment><comment><USER334> Finance app for stocks on event basis.

[https://stockevents.app](https://stockevents.app)

</comment><comment><USER335> Haven't decided whether to open source or not ($$$) but I've been working on a thermomechanical tyre model.

<comment><USER336> a what?

<comment><USER335> Vehicle dynamics is a fairly simple science except for modelling tyres. By which I mean (in steady state conditions) a mapping _(Force, Slip Angle, Slip Ratio) - > (Lateral Force, Long. Force, Moments etc)_

It's fairly complicated because Tyre's are made of rubber, so you either use finite element analysis which is slow, or some kind of (FD) approximation which can be fairly crap. Modelling the transient properties properly is doable, modelling the thermal properties efficiently is genuine "If we told you we'd have to kill you" black magic

</comment></comment></comment><comment><USER132> I made this [https://hxfd.prog.re/](https://hxfd.prog.re/)

</comment><comment><USER337> I made my side project connect to North European banks as well as US and Canadian ones. PSD2 is really something!

Receiptrunner.com

</comment><comment> I-M-S Made three more episodes of my fiction podcast The Program audio series (which had its premiere on HN actually!)

</comment><comment><USER338> A macOS automatic activity analysis tool.

</comment><comment><USER339> A web directory for blogs

[https://www.findyour.blog](https://www.findyour.blog)

<comment><USER254> That's cool! Now I have something more than Netflix to pass time. Are you working on it fulltime?

<comment><USER339> Nope, just a fun little project that i contribute to here and there.

</comment></comment></comment><comment><USER340> I taught myself how to bake a decent pizza at home.

You wouldn't believe how much material there's in internet about that :)

</comment><comment><USER341> educational app to learn in regional language(marathi) its Indian language [https://play.google.com/store/apps/details?id=com.sokra.acad...](https://play.google.com/store/apps/details?id=com.sokra.academy)

</comment><comment><USER342> [https://randomeps.com/](https://randomeps.com/)

</comment><comment> awinter-py social bingo cards for predictions

[https://bingotronic.io/~abewinter2](https://bingotronic.io/~abewinter2)

WIP, signup here [https://bingotronic.io/auth/join](https://bingotronic.io/auth/join)

no ddos pls

</comment><comment><USER343> I've learned to cook cakes, started running, and continued my light-fields video camera project.

</comment><comment><USER344> Someone should construct a mechanical turk, and then pay people on mechanical turk to be opponents

</comment><comment><USER345> I made a website to create and mail a postcard.

Https://mailapicture.com

Made it with laravel hosted on aws lightsail.

</comment><comment><USER346> [https://maskson.org](https://maskson.org)

I made that!

</comment><comment><USER347> I did make loads of bread. Can probably find somewhere a picture of the 1st one.

</comment><comment><USER348> Didn't build as much as I dove into NixOS. Really enjoying it so far.

</comment><comment><USER349> I've written 1Tab chrome extension to only allow 5 tabs open altogether. Worldly, (web+chrome extension) helps you get better at English by learning words (usually for advanced users of a language.). Https://worldly.mammbo.com Remade [https://kippie.co](https://kippie.co) helps you get your data through GDPR and Use it to get cheaper insurance. Built a needle pump breather during the first phases of the lockdown. Invented a valve for patients on a breathing machine to be more comfortable. It could be used in a specific setup to allow for a patient on an emergency breather to supply air to 2 patients. Im now working on an idea to improve the speed of gold standard testing to be performed in-situ. I got the idea and started working on it during lockdown.

Also, experimented with 3d printing visors and changing the designs.

</comment><comment><USER350> I added Lensfun lens correction to my photo editing app Filmulator.

</comment><comment><USER351> A video game... but the trailer, demo, and website won't be ready for another 1-2 months. Also need to hack together a terms of use that says "you don't own this demo, but you can play it" and that sort of thing.

I am so close to it being blog-ready though!

</comment><comment><USER352> I've written a simple p2p video call with LI capability.

</comment><comment><USER353> Me and my friend finished our News API. Newscatcherapi.com

</comment><comment><USER354> 4plymag.com

A little data-driven magazine for skateboarding.

Superfluous? Yes. Fun? Also yes

</comment><comment><USER355> A bunch of shit on Minecraft and some dnb dj mixes

</comment><comment><USER356> getessayer.com to help GRE/TOEFL students study AWA essays.

t.me/wordsbyroots to help them improve their vocab

</comment><comment><USER357> My product is writing. I wrote

preetamnath.com/blog

</comment><comment><USER358> Https://battledao.com

</comment><comment><USER359> I learned how to use Ansible

</comment><comment><USER360> A kid

</comment><comment><USER361> I carved my own crankbait.

</comment><comment><USER362> A mess of my personal life

<comment><USER363> You and me both, we will get through this.

</comment></comment><comment><USER364> A youtube channel.

</comment><comment><USER365> 200+ LC problems.

</comment><comment><USER366> I learnt C++!

</comment><comment><USER358> Battledao.com

</comment><comment><USER367> Babies!

</comment><comment><USER368> I survived.

</comment><comment><USER369> I feel like this thread has been posted more than a couple of times lately, or am I imagining things?

Anyways I built a quick bot to connect Calendly to Slack[1] as people in my sales team where requesting "native" integration (plus we didn't want to pay for multi-user access on Zapier)

Unfortunately it works only with Calendly Pro and Premium accounts, but looking into workarounds for free users (leveraging gCal)

[1] [https://www.calenduck.co/](https://www.calenduck.co/)

</comment><comment><USER370> I have a kid, so the software isn't done..

</comment><comment><AUTHOR> Thank you so much for the response to this post. There have been more than 90 products added in the past hour alone. This is incredible!</comment>