im Using example code
https://github.com/HelTecAutomation/CubeCell-Arduino/tree/master/libraries/LoRa/examples/LoRaWAN/LoRaWAN_Sensors/LoRaWan_OnBoardGPS_Air530 and TTN otaa.
I send GPS data to TTN every 30min. The example works fine at first, but after about 5 hours it sends final two messages in less than 1s and then stops for ever.
For me it looks as if the sleep mechanism fails (or rtc problem?)
The problem happens if USB or battery powered or if ADR is enabled or disabled.
Anybody expireinced the same? Any suggestions?