STM32/ESP32/ESP8285-based High-Performance Radio Link for RC applications
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Support ExpressLRS

You can support ExpressLRS by contributing code, testing new features, sharing your ideas, or helping others get started. We are exceptionally grateful for those who donate their time to our passion.

If you don't have time to lend a hand in that way but still want to have an impact, consider donating. Donations are used for infrastructure costs and to buy test equipment needed to further the project and make it securely accessible. ExpressLRS accepts donations through Open Collective, which provides recognition of donors and transparency on how that support is utilized.

Open Collective backers

We appreciate all forms of contribution and hope you will join us on Discord!


For general information on the project please refer to our guides on the website, and our FAQ


ExpressLRS is an open source Radio Link for Radio Control applications. Designed to be the best FPV Racing link, it is based on the fantastic Semtech SX127x/SX1280 LoRa hardware combined with an Espressif or STM32 Processor. Using LoRa modulation as well as reduced packet size it achieves best in class range and latency. It achieves this using a highly optimized over-the-air packet structure, giving simultaneous range and latency advantages. It supports both 900 MHz and 2.4 GHz links, each with their own benefits. 900 MHz supports a maximum of 200 Hz packet rate, with higher penetration. 2.4 GHz supports a blistering fast 1000 Hz on EdgeTX. With over 60 different hardware targets and 13 hardware manufacuturers, the choice of hardware is ever growing, with different hardware suited to different requirements.


To configure your ExpressLRS hardware, the ExpressLRS Configurator can be used, which is found here:


We have both a Discord Server and Facebook Group, which have great support for new users and constant ongoing development discussion


ExpressLRS has the following features:

  • 1000 Hz Packet Rate
  • Telemetry (Betaflight Lua Compatibility)
  • Wifi Updates
  • Bluetooth Sim Joystick
  • Oled & TFT Displays
  • 2.4 GHz or 900 MHz RC Link
  • Ceramic Antenna - allows for easier installation into micros
  • VTX and VRX Frequency adjustments from the Lua
  • Bind Phrases - no need for button binding

with many more features on the way!

Supported Hardware

ExpressLRS currently supports hardware from the following manufacturers: AxisFlying, BETAFPV, Flywoo, FrSky, HappyModel, HiYounger, HGLRC, ImmersionRC, iFlight, JHEMCU, Jumper, Matek, NamimnoRC, QuadKopters and SIYI.

For an exhaustive list of hardware targets and their user guides, check out the Supported Hardware and Receiver Selection pages on the website. We do not manufacture any of our hardware, so we can only provide limited support on defective hardware.


If you are a developer and would like to contribute to the project, feel free to join the discord and chat about bugs and issues. You can also look for issues at the GitHub Issue Tracker. The best thing to do is to a submit a Pull Request to the GitHub Repository.

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