FeatherWing RFM95W

Buy

• https://www.adafruit.com/product/3231 (EU = 900 MHz, ~20$)
• https://www.adafruit.com/product/1865 (connector, ~3$)
• https://www.adafruit.com/product/1858 (antenna, ~5$)

Code

Arduino

• https://learn.adafruit.com/the-things-network-for-feather/arduino-setup
• Library: Sketch > Include Library > Manage Libraries > MCCI LoRaWAN LMIC > Install

Python

• https://learn.adafruit.com/using-lorawan-and-the-things-network-with-circuitpython

Pinout

• https://learn.adafruit.com/radio-featherwing/pinouts

See also SPI control pins, e.g.

Or use the adapter PCB:

Mapping

RFM95W	Wing	ESP8266	M4	nRF52840
NC	A	13	11	11
DIO0 = IRQ	B	15	10	10
DIO1	C	0	9	9
RST	D	16	6	6
CS	E	2	5	5
NC	F	NC	19	19

NC = Not Connected

Feather Huzzah ESP8266

const lmic_pinmap lmic_pins = {
    .nss = 2, // CS
    .rxtx = LMIC_UNUSED_PIN,
    .rst = 16, // RST
    .dio = {
        15, // DIO0 = IRQ 
        0,  // DIO1
        LMIC_UNUSED_PIN
    }
};

Feather M4 Express

const lmic_pinmap lmic_pins = {
    .nss = 5, // CS
    .rxtx = LMIC_UNUSED_PIN,
    .rst = 6, // RST
    .dio = {
        10, // DIO0 = IRQ 
        9,  // DIO1
        LMIC_UNUSED_PIN
    }
};

Feather nRF52840 Express

const lmic_pinmap lmic_pins = {
    .nss = 5, // CS
    .rxtx = LMIC_UNUSED_PIN,
    .rst = 6, // RST
    .dio = {
        10, // DIO0 = IRQ 
        9,  // DIO1
        LMIC_UNUSED_PIN
    }
};

Resources

• https://blog.werktag.io/posts/adafruit-feather-m0-lora-on-ttn/
• https://learn.adafruit.com/using-lorawan-and-the-things-network-with-circuitpython?view=all#wiring-with-a-radio-featherwing-2-7
• https://learn.adafruit.com/radio-featherwing?view=all
• https://learn.adafruit.com/radio-featherwing?view=all#sma-edge-mount-connector-4-10
• https://learn.adafruit.com/radio-featherwing/wiring