expresslrs

An Arduino Library for communicating with ExpressLRS and TBS Crossfire receivers.

Open-source ExpressLRS receiver family (ESP32-C3, SX1281 / LR1121). Part of the OpenDrone ecosystem.

Encrypted ELRS fork. ASCON-128 authenticated encryption, cryptographic FHSS, same hardware. Drop-in upgrade.

A testing tool for Crossfire and ExpressLRS receivers using ESP32 and SPI display

Saleae Logic 2 High Level Analyzer: Crossfire decoder for R/C protocol as used by TBS Crossfire, Tracer or ExpressLRS

Advanced lua-based quad dashboard. Shows: quad telemetry, gps positions, timer and etc.

Crossfire protocol parser for no_std rust.

A clone of https://github.com/mikeneiderhauser/CRSFJoystick to support the Arduino Pro Micro (atmega32u4)

RadioMaster AX12 hardware reverse engineering — UMBUS protocol spec, native library analysis, device tree, tools, and developer setup guide

Drone flight controller with MPU6050, ExpressLRS, PID control, and motor mixing. Developed in PlatformIO

An Open Source Radio Transmitter Project

Ghost RX: a passive telemetry-sniffing receiver based on ExpressLRS 3.5.0 for non-intrusive monitoring of an existing ELRS link.

EdgeTX telemetry widget with live QR code and a modern UI - Supports Betaflight and iNAV on radios with a large color screen

Telemetry dashboard and session logger for EdgeTX RadioMaster TX16S, ExpressLRS, and Betaflight.

RC helicopter profiles & templates for your EdgeTX controller.

Your Frsky won't bind, welcome!

Using the Bluepill board (STM32F103C8T6), we will connect the CRSF rc protocol receiver as a USB PC joystick.

Turn an ExpressLRS (ELRS) or TBS Crossfire/Tracer WiFi module into a vJoy virtual joystick on Windows for FPV simulators like VelociDrone and Liftoff. No cables, no MAVLink.

Turns the RadioMaster AX12 Android radio into a field GCS - CoT bridge streaming MAVLink telemetry to ATAK / TAK server, with on-device web and CLI launchers. Termux plus stdlib Python.

EdgeTX Lua script that audibly warns you before your ExpressLRS link breaks down.