Let's discusse improvements of hardware such as:
1) gps
2) nfc
3) nrf52840? (more flash and ram)
4) mag
5) gyro
6) PMIC for power consume
7) RTC battry
1) gps
2) nfc
3) nrf52840? (more flash and ram)
4) mag
5) gyro
6) PMIC for power consume
7) RTC battry