Big LoRa32u4 boards topic

[bluejedi]

If you wait some 5 to 10 minutes you will probably see it joining at SF9 (maybe SF10).

The AVR 8MHz microcontrollers can be a bit too slow for LMIC. To fix this OTAA JOIN ACCEPT timing issue try to relax LMIC timing, see:

Got Adafruit Feather 32u4 LoRa Radio to work and here is how

Have you relaxed the timing by using LMIC_setClockError(MAX_CLOCK_ERROR * 1 / 100); between the LMIC reset and the join attempt?

For LoRa32u4 II v1.2 if you have connected DIO1 with the solder pads to digital pin 1 and have not connected DIO2 (which is not needed for LoRa) use this:

// Set pin mapping for SX127x/RFM9x.
const lmic_pinmap lmic_pins = {
  .nss = 8,
  .rxtx = LMIC_UNUSED_PIN,
  .rst = 4,
  .dio = {/*dio0*/ 7, /*dio1*/ 1, /*dio2*/ LMIC_UNUSED_PIN}
};