KiCad design files for my RoomSensorV2 - a battery power, wireless, environment sensor
- Temperature, humidity and light sensor
- ARM® Cortex®-M0+ based atsamd21g18a microcontroller (way overkill of course, but easier to program than a tiny 8-bit micro)
- RN2483 LoRa wireless module
- Uses external RTC DS3231SN# to cut power to all components to achieve ~0.9µA sleep current
- USB-C for easy firmware updates - which are not really needed because I am going to implement over-the-air firmware updates
