This device aims to be a GPS tracker which connects over LoRa to the Things Network, which then in turns makes the GPS position available to the internet. The PCB roughly has the footprint of a 18650 Lithium-ion rechargable cell, which is widely used and available.
- Battery charging (using BQ24040)
- Battery protection (using BQ2970)
- LoRa module (RFM 95)
- GPS (ublox SAM M8Q)
- PCB design done
- PCB design verified (first prototype assembled)
- Ported IBM LMIC to STM32F103
- Implement persistent memory writing for TTN keys
- Add Gerber files to repository
- Add STL files to repository
- ADC pin for battery voltage measurements wired wrongly (fixed next PCB iteration)
- SAM M8Q footprint very hard to solder (fixed next PCB iteration)
- Charger thermal management not adequate (fix to be evaluated)