# expresslrs/expresslrs

**Attribution required: if you use, quote, or summarise this content, you must credit and link back to [awesome-repositories.com](https://awesome-repositories.com/repository/expresslrs-expresslrs).**

_How this analysis was created: the description and tags below were written by an AI model that read this project's README and public documentation pages; stars, license and language come straight from the GitHub API. The model does not read the source code._

5,031 stars · 1,437 forks · C · GPL-3.0

## Links

- GitHub: https://github.com/ExpressLRS/ExpressLRS
- awesome-repositories: https://awesome-repositories.com/repository/expresslrs-expresslrs.md

## Description

ExpressLRS is an open-source radio control system that provides a high-performance radio link between transmitters and receivers. It primarily consists of firmware that leverages LoRa technology to enable long-range wireless communication with low latency.

The system distinguishes itself through a phrase-based device binding mechanism, which uses unique text strings to pair hardware without the need for physical buttons. It also includes a joystick emulator that allows radio hardware to provide input for flight and racing simulators via Bluetooth or WiFi.

The project covers a broad range of radio control capabilities, including real-time telemetry monitoring, control signal routing for hardware compatibility, and video frequency management. It provides tools for target-specific firmware compilation and supports wireless firmware updates over WiFi.

## Tags

### Part of an Awesome List

- [LoRa Radio Firmware](https://awesome-repositories.com/f/awesome-lists/devtools/radio-control/lora-radio-firmware.md) — Implements firmware for radio hardware leveraging LoRa technology for extended range and reliability.
- [Protocol Translation](https://awesome-repositories.com/f/awesome-lists/devtools/radio-control/protocol-translation.md) — Implements a translation system that converts radio inputs into supported receiver protocols to ensure hardware compatibility. ([source](https://github.com/expresslrs/expresslrs#readme))
- [Radio Control](https://awesome-repositories.com/f/awesome-lists/devtools/radio-control.md) — High-performance, low-latency radio link for long-range control.

### Hardware & IoT

- [Real-Time Telemetry Routing](https://awesome-repositories.com/f/hardware-iot/autonomous-flight-controllers/flight-data-loggers/real-time-telemetry-routing.md) — Implements a bidirectional protocol for routing real-time sensor telemetry from receivers back to the transmitter.
- [Long-Range RF Transmission](https://awesome-repositories.com/f/hardware-iot/long-range-rf-transmission.md) — Provides long-range radio communication capabilities using LoRa chirp spread spectrum technology.
- [Radio Telemetry Protocols](https://awesome-repositories.com/f/hardware-iot/radio-telemetry-protocols.md) — Implements a protocol for sending real-time status and sensor information from the receiver back to the transmitter. ([source](https://github.com/expresslrs/expresslrs#readme))
- [RC Receiver Pairing](https://awesome-repositories.com/f/hardware-iot/usb-receiver-management/rc-receiver-pairing.md) — Pairs transmitters and receivers using unique phrases to establish a secure connection without physical buttons.
- [Phrase-Based Binding](https://awesome-repositories.com/f/hardware-iot/device-binding-tables/phrase-based-binding.md) — Uses unique text strings to bind transmitters and receivers without the need for physical buttons. ([source](https://github.com/expresslrs/expresslrs#readme))
- [Firmware Management](https://awesome-repositories.com/f/hardware-iot/firmware-management.md) — Provides mechanisms for configuring and updating firmware on embedded radio hardware.
- [Firmware OTA Update Systems](https://awesome-repositories.com/f/hardware-iot/firmware-management/remote-firmware-updaters/firmware-ota-update-systems.md) — Supports wireless over-the-air firmware updates via a local WiFi web server.
- [Hardware Target Configurations](https://awesome-repositories.com/f/hardware-iot/hardware-target-configurations.md) — Includes tools for adjusting system parameters to match specific hardware targets and board types. ([source](https://github.com/expresslrs/expresslrs#readme))

### System Administration & Monitoring

- [Telemetry Protocols](https://awesome-repositories.com/f/system-administration-monitoring/logging-and-telemetry/telemetry-protocols.md) — Implements a standardized communication protocol for transmitting real-time sensor data back to transmitters.
- [Radio Signal Monitoring](https://awesome-repositories.com/f/system-administration-monitoring/radio-signal-monitoring.md) — Transmits real-time signal strength and sensor data from the receiver to the operator for live monitoring.

### User Interface & Experience

- [RC Protocol Translators](https://awesome-repositories.com/f/user-interface-experience/touch-gesture-detectors/capacitive-touch-calibrators/touch-controller-drivers/touchpad-coordinate-retrieval/signal-translators/rc-protocol-translators.md) — Translates radio input data into standard protocols to ensure compatibility with various flight controllers.

### Programming Languages & Runtimes

- [Hardware-Targeted Compilation](https://awesome-repositories.com/f/programming-languages-runtimes/source-code-compilers/multi-target-compilers/hardware-targeted-compilation.md) — Generates binary builds optimized for specific hardware pinouts and processor targets.

### Security & Cryptography

- [Binding Phrase Verifiers](https://awesome-repositories.com/f/security-cryptography/cryptographic-hash-verifiers/binding-phrase-verifiers.md) — Implements a secure device pairing mechanism using cryptographic hashes of unique text phrases.