Thanks Felix this worked for me.
The LMIC pin mapping for this board that worked for me:
lmic_pinmap pins = {
.nss = 4,
.rxtx = 7, // Do not worry about this one - not connected RFM95
.rst = 3, // Reset pin D3 - solder the pad on the board
.dio = {22, 21, 0}, //Solder the D22 and D21 pads on the board - D22, D21 - 0 is not used and sometimes if I used LMIC_UNUSED_PIN I would get a compile error.
};
In your config.h file change the radio freq by uncommenting #define CFG_us915 1 and commenting #define CFG_eu868 1
Also uncomment #define CFG_sx1276_radio 1
//#define CFG_eu868 1
#define CFG_us915 1
// This is the SX1272/SX1273 radio, which is also used on the HopeRF
// RFM92 boards.
//#define CFG_sx1272_radio 1
// This is the SX1276/SX1277/SX1278/SX1279 radio, which is also used on
// the HopeRF RFM95 boards.
#define CFG_sx1276_radio 1