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One radio library to rule them all!

Universal wireless communication library for Arduino

See the Wiki for further information. See the GitHub Pages for detailed and up-to-date API reference.

RadioLib allows its users to integrate all sorts of different wireless communication modules, protocols and even digital modes into a single consistent system. Want to add a Bluetooth interface to your LoRa network? Sure thing! Do you just want to go really old-school and play around with radio teletype, slow-scan TV, or even Hellschreiber using nothing but a cheap radio module? Why not!

RadioLib was originally created as a driver for RadioShield, but it can be used to control as many different wireless modules as you like - or at least as many as your Arduino can handle!

Supported modules:

  • CC1101 FSK radio module
  • ESP8266 WiFi module
  • HC05 Bluetooth module
  • JDY08 BLE module
  • LLCC68 LoRa module
  • nRF24L01 2.4 GHz module
  • RF69 FSK/OOK radio module
  • RFM2x series FSK modules (RFM22, RM23)
  • RFM9x series LoRa modules (RFM95, RM96, RFM97, RFM98)
  • Si443x series FSK modules (Si4430, Si4431, Si4432)
  • SX126x series LoRa modules (SX1261, SX1262, SX1268)
  • SX127x series LoRa modules (SX1272, SX1273, SX1276, SX1277, SX1278, SX1279)
  • SX128x series LoRa/GFSK/BLE/FLRC modules (SX1280, SX1281, SX1282)
  • SX1231 FSK/OOK radio module
  • XBee modules (S2B)

Supported protocols and digital modes:

  • MQTT for modules:
    ESP8266
  • HTTP for modules:
    ESP8266
  • AX.25 using 2-FSK or AFSK for modules:
    SX127x, RFM9x, SX126x, RF69, SX1231, CC1101, RFM2x and Si443x
  • RTTY using 2-FSK or AFSK for modules:
    SX127x, RFM9x, SX126x, RF69, SX1231, CC1101, nRF24L01, RFM2x, Si443x and SX128x
  • Morse Code using 2-FSK or AFSK for modules:
    SX127x, RFM9x, SX126x, RF69, SX1231, CC1101, nRF24L01, RFM2x, Si443x and SX128x
  • SSTV using 2-FSK or AFSK for modules:
    SX127x, RFM9x, SX126x, RF69, SX1231, CC1101, RFM2x and Si443x
  • Hellschreiber using 2-FSK or AFSK for modules:
    SX127x, RFM9x, SX126x, RF69, SX1231, CC1101, nRF24L01, RFM2x, Si443x and SX128x

Supported platforms:

  • Arduino

    • AVR - Arduino Uno, Mega, Leonardo, Pro Mini, Nano etc.
    • mbed - Arduino Nano 33 BLE and Arduino Portenta H7
    • megaAVR - Arduino Uno WiFi Rev.2 and Nano Every
    • SAM - Arduino Due
    • SAMD - Arduino Zero, MKR boards, M0 Pro etc.
  • Adafruit

    • SAMD - Adafruit Feather M0 and M4 boards (Feather, Metro, Gemma, Trinket etc.)
    • nRF52 - Adafruit Feather nRF528x, Bluefruit and CLUE
  • Espressif

  • Intel

  • SparkFun

    • Apollo3 - Sparkfun Artemis Redboard
  • ST Microelectronics

  • MCUdude

    • MegaCoreX - megaAVR-0 series (ATmega4809, ATmega3209 etc.)

The list above is by no means exhaustive. Most of RadioLib code is independent of the used platform, so as long as your board is running some Arduino-compatible core, RadioLib should work. Compilation of all examples is tested for all platforms prior to releasing new version.

In development:

  • SIM800C GSM module
  • LoRaWAN protocol for SX127x, RFM9x and SX126x modules
  • APRS protocol for all the modules that can transmit AX.25
  • and more!

Frequently Asked Questions

Where should I start?

First of all, take a look at the examples and the Wiki - especially the Basics page. There's a lot of useful information over there. If something isn't working as expected, try searching the issues.

Help, my module isn't working!

The fastest way to get help is by creating an issue using the appropriate template. It is also highly recommended to try running the examples first - their functionality is tested from time to time and they should work. Finally, RadioLib is still under development, which means that sometimes, backwards-incompatible changes might be introduced. Though these are kept at minimum, sometimes it is unavoidable. You can check the release changelog to find out if there's been such a major change recently.

RadioLib doesn't support my module! What should I do?

Start by creating new issue (if it doesn't exist yet). If you have some experience with Arduino and C/C++ in general, you can try to add the support yourself! Use the template files in /extras/ folder to get started. This is by far the fastest way to implement new modules into RadioLib, since I can't be working on everything all the time. If you don't trust your programming skills enough to have a go at it yourself, don't worry. I will try to implement all requested modules, but it will take me a while.