need help: I’m building a TTN node with Arduino Mega 2560 Rev3 and RFM SX1276.
I tried 2 szenarios (OTAA & ABP), but they all boil down to this same error…
Dear @freddx I don’t know a simple way to interface this 2 systems… I would recommend you using a 3.3V Arduino, like the Arduino pro mini 8MHz, or any other board in the supported hardware in the LMIC library documentation:
I’ve tried with the Arduino Pro mini, it worked perfectly, but my code is somehow too big (occupes ~85% of memory) and it won’t work anymore. Do you have a solution for that?
You will find that LMIC-node will help you hit the ground running.
The Feather M0 will need a minor fully documented board mod - an extra wire - but has first class support from the underlying LMIC library. It will also need a suitable length wire (8.4cm) as an antenna - best to use solid core so it can stand to attention.
The ATmega2560 has bags of flash & SRAM so will be fine.
With these things, reading the docs and going step-by-step will pretty much guarantee success.