ComAir

ComAir

A LoRa air quality sensor powered with an indoor solar pannel.

This PCB uses:

• as MCU: STM32L412C8
• for LoRa communication: RFM95
• for energy harvesting: SPV1050
• any 18650 lithium cell (could be recycled from old laptop battery)
• as solar pannel, one or two: LL200-4.8-37
• for CO2 sensing: SCD41
• for temperature and humidity: either SCD41 or SHTC3

Warning this project is still work in progress, PCB may still contain errors.

PCB V1.0 preview:

TODO

• Write some basic testing firmware
• Evaluate energy balance
• Optimize energy usage

License

• CC-BY-SA