Serial communication usb

End Devices (Nodes) Pycom
1

I do serial communication (usb) between an rpi3 and a lopy, the problem is that the TTN does not receive the same byte transmitted by rpi3

2

The payload 5B4E6F6E655D decodes to the ASCII text [None].

So, the screenshot that prints some debug info is not printing what you’re sending. Lacking any detail, that’s all we can tell from the screenshot.

3

A packet every 3 seconds ?

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