Well, the use case is quite simple: I want to register my device (e.g. Arduino Nano) to the TTN (either via OTAA or ABP) and send simple messages like a counter or temperature or things like that.
I am already using ESP32 devices with LoRaWAN (RFM95), but I got a batch of E220 modules and thought I could use them in a similar way with lower power consumption.
Thanks for your help,
Cheers,
Philipp