Source code for BSFrance LoRa32u4 II

The board is good. You can buy it at AliExpress. Quite cheap also. I found that the performance of the LoRa chip is quite good.
For the LMIC library, i use my LMIC_AS923 library. You can find it in my github also.

Note that my board is version 1.3. So, the pin configuration for the LoRa chip is like this :

/* Pin mapping */ const lmic_pinmap lmic_pins = { .nss = 8, .rxtx = LMIC_UNUSED_PIN, .rst = 4, .dio = {7, 5, LMIC_UNUSED_PIN}, };

Don't forget, in your Arduino's IDE Preferences-?Additional Boards Manager URL : https://adafruit.github.io/arduino-board-index/package_adafruit_index.json

And in the Board Manager section, please choose "Adafruit Feather 32u4"

Compile and flash as usual.