My open-source, do-it-yourself cellphone (2013)
This is great! Here's my (more retro) take on it:https://www.stavros.io/posts/irotary-saga/I'm looking to make a PCB for it, as the Arduino Uno + shield is way, way too big for this. Does anyone know of a good way to do that? I looked at the SIM900 module but I was a bit intimidated by all the pins.The OP's build seems to be using the Quectel M10, maybe it won't be too hard to get that running...