I have a diagram of my Arduino circuit. How do get it ready for PCB manufacture? For my engineering class, I am building a digital scale. My team has assembled the prototype out of:


Arduino Uno
Hx711 amplifier module
1 kg load cell
2 push buttons
A 4 digit 7-segment display module we found online, but we don't know its specific name
HC-05 Bluetooth module, no specific manufacturer
Lilypad switch CR2032 battery module
DC-DC step up to 5V boost converter module


Our prototype works. Well, sort of (we're still trying to work out the boost converter and c2032 to work). We have diagrammed how each module connects to each other on a piece of paper. However, we want to properly diagram this in a way so we can create a PCB for it.

I have tried the Eagle and Fritzing programs. I am very inexperienced with them. I am not able to find the HC-05 and LED display .sch or .fzz files online for this, so I have came to a halt. I am not sure how each of these modules are actually wired together either.

What can I do next?
You can find the parts on fritzing.org. Anyway. You can get rid of some parts and save money if you pick the right ones. Instead of an Arduino Uno take an Arduino Pro Mini with 3.3V and HC-05 without a breakout for 5V Arduinos.

Doing that everything will smaller and running on 3.3V thus getting rid of the DC-DC converter.