I did read the whole page of documentation:
Downloaded Talk2 Library from Bitbucket and try out examples:
Blink.nonBlocking, PowerDown.wakePeriodic and Voltage.node
Voltage.node is trasmiting data, but not to TTN.
I have tried to customize helloLora example from TinyLora library by changing the pin numbers, but without luck. It just does not send any data to TTN Console.
I have found tutorial here:
It looks like excelent tutorial, but does not work with Whisper node.
I just need one working example to understand how it should look, but for uknown reason I cant find a single example