# opentx/opentx

OpenTX custom firmware for Transmitters

Repository: https://github.com/opentx/opentx
Canonical: https://ross.abutalabs.com/products/opentx
Language: C++
License: GPL-2.0
License Family: copyleft
Topics: firmware, transmitter
Last push: 2026-07-23T21:10:23+00:00

## Health v2 (maintenance only)
Score: 65/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 94, release rhythm 8, longevity 100
- inputs: {"age_days": 4660, "days_push": 41, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2186, forks 836 (observed 2026-08-28T04:06:23.673107+00:00)

## What it is
OpenTX is open-source custom firmware for RC radio transmitters, written in C++. It replaces stock transmitter firmware to provide advanced mixing, telemetry, and Lua scripting capabilities for hobbyist radio control.

## Use cases
- replace stock firmware on my RC transmitter
- custom firmware for FrSky Taranis radio
- program mixes and telemetry on my RC transmitter
- run Lua scripts on my radio transmitter
- open source firmware for RC hobby transmitters

## When to choose
- you want advanced mixing, telemetry, and scripting on a supported RC transmitter
- you prefer open-source, community-driven transmitter firmware
- you want to customize your radio beyond stock manufacturer features

## When to avoid
- your transmitter model is not supported by OpenTX
- you need manufacturer warranty or official support
- you are uncomfortable flashing custom firmware onto hardware

## Facets
- artifact type: application
- maturity: active
- function: embedded
- domain: hardware, embedded-systems, cross-platform
- platform: embedded, cpp, cross-platform
- tags: rc-transmitters, firmware, lua-scripting, radio-control, hobby

## Member repositories
- opentx/opentx (main) score 65

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:23.673107+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:47:55.393188+00:00, confidence not recorded.
  - readme: https://github.com/opentx/opentx (fetched 2026-08-28T04:06:23.673107+00:00, sha 2a671d9144d6)
- Data as of 2026-08-30T08:39:29.467469+00:00.