Designing, Building, and Coding Custom Raspberry Pi RP2040 Arduino Devices – Day 3

Our universal RP2040 hardware is everything to Arduino. However, even with the full power of Arduino behind it, the only way the RP2040 has to communicate with the outside world is by wire. No worries. Today we will reach into our parts bin and pull out enough parts to cobble together a nifty piece of BLE hardware. Then, we will access the Arduino library farm and pull in some code to help us write an Arduino driver for our new BLE radio. After the solder smoke clears and the Arduino BLE sketch compiles, we will establish a BLE link between our universal RP2040 Arduino hardware and a nearby Android phone.