Post #2302642

Quick bill of materials: - Challenger RP2040 LoRa “embedded computer” with Raspberry Pi Pico microcontroller, a battery charge controller and a LoRa radio for long distance, low power networking - Quectel L76K GPS radio - STMicroelectronics LSM303AGR with accelerometer and magnetometer - Waveshare 2.13in ePaper display - 420mAh LiPo battery for 4+ hours charge - Two buttons for simple input, and a set of eight “DIP” switches that can be toggled for … fun. Because DIP switches are cool.