r8420 / feuchtraumabzweigdose-testing Goto Github PK

This is a testbed for the Feuchtraumabzweigdose board, incorporating switchable GPS, MPU9250 etc.

Derived from radforschung/Lora-TTNMapper-T-Beam which itself was derived from sbiermann/Lora-TTNMapper-ESP32 and with some information/inspiration from cyberman54/ESP32-Paxcounter and Edzelf/LoRa.

Modified and enhanced by dermatthias with sleep and OTAA features for this fork. Additional sleepytimes for the GPS module enabling lower-power-ish operations by stk, based on work by JoepSchyns/Low_power_TTGO_T-Beam and helpful ublox documentation in the UKHAS Wiki. This also measures and transmits battery voltage.

Arduino IDE ESP32 extension

TinyGPS++

MCCI LMIC Arduino This is a hell to configure. You need to edit ~/Arduino/libraries/MCCI_LoRaWAN_LMIC_library/project_config/lmic_project_config.h and define the “right” band, e.g. CFG_eu868 (and comment out non-matching others)

Bolderflight MPU9250 library if you want to wake the device through the MPU9250 IMU

• save the GPS 'status' so that on next boot it gets a fix faster.
• Adapt the data send frequency based on current velocity : When not moving, an update per hour should be enough. ← prototype with cheap (1€) IMU board; in this case MPU 9250