Arduino LoRa

An Arduino library for sending and receiving data using LoRa radios.

Compatible Hardware

• Semtech SX1276/77/78/79 based boards including:
  • Dragino Lora Shield
  • HopeRF RFM95W, RFM96W, and RFM98W
  • Modtronix inAir4, inAir9, and inAir9B

Semtech SX1276/77/78/79 wiring

Semtech SX1276/77/78/79	Arduino
VCC	3.3V
GND	GND
SCK	SCK
MISO	MISO
MOSI	MOSI
NSS	10
NRESET	9
DIO0	2

NSS, NRESET, and DIO0 pins can be changed by using LoRa.setPins(ss, reset, dio0). DIO0 pin is optional, it is only needed for receive callback mode. If DIO0 pin is used, it must be interrupt capable via attachInterrupt(...).

NOTE: Some boards (like the Arduino Nano), cannot supply enough current for the SX127x in TX mode. This will cause lockups when sending, be sure to use an external 3.3V supply that can provide at least 120mA's when using these boards.

Installation

Using the Arduino IDE Library Manager

1. Choose Sketch -> Include Library -> Manage Libraries...
2. Type LoRa into the search box.
3. Click the row to select the library.
4. Click the Install button to install the library.

Using Git

cd ~/Documents/Arduino/libraries/
git clone https://github.com/sandeepmistry/arduino-LoRa LoRa

API

See API.md.

Examples

See examples folder.

License

This libary is licensed under the MIT Licence.