Hand-held programmable device needed Hopefully this question is not too off-topic for this board. I need a ready-made programmable hand-held device with an ethernet-connection. Something like an Arduino with batteries and display and some buttons in a box.
This is for my company so a complete ground-up assembly is too expensive and time-consuming in this case. Any hints to companies that produce something like this are welcome. And yes, I tried searching with different search-engines already. :-)
Thanks for your time!
I have no opinion about this hardware (I don't own it) so please treat my answer as information only. When I was searching through web I found M5Stack

It looks like hardware made for IoT development.
It has a LCD and 3 buttons and think it can be programmed using ArduinoIDE.
It's designed that you can design any hardware you want and "stack" the device on top of it. Found if available to buy from China for below 30USD.



https://www.youtube.com/watch?v=U2es-l4z2Zg