Rotorflight

Flight controller firmware for single-rotor RC helicopters, forked from Betaflight 4.3 and configured with the Rotorflight Configurator.

Made by Rotorflight, United Kingdom (checked on github.com/rotorflight (opens in a new tab)).

Licenses

Code: GPL-3.0-only (opens in a new tab)
Read by Robotheca from LICENSE (opens in a new tab) (GPL-3.0-only) at commit a88bec8 (opens in a new tab), on 16 Oct 2026.
Commercial use: Yes

Copyleft: Modified source must be published.

Provides advanced PID control and 6D stabilisation modes tailored to helicopters.
Includes a rotor speed governor and motorised tail support with Tail Torque Assist.
Supports many receiver and telemetry protocols, plus several ESC telemetry protocols.
Allows tuning from the transmitter through knobs, switches and Lua scripts on EdgeTX, OpenTX and Ethos.
Offers dynamic RPM-based and FFT-based notch filtering and high-speed blackbox logging.
Does not support multi-rotor craft or airplanes.

Written by Robotheca from the project's README (opens in a new tab) at commit a88bec8.

Difficulty: Intermediate
Hardware it needs, as the project states it: Runs on flight controller boards that have enough suitable I/O pins for the required servos and motors, with dedicated helicopter flight controllers recommended; supports STM32F405, STM32F722, STM32F745 and STM32H743 MCUs, while STM32G474 and STM32F411 support is end-of-life.
How to start: The project's README (opens in a new tab)

Checked on GitHub on 16 Oct 2026.

No robot on Robotheca is linked to it yet. Links come from a robot's robot.yaml, from its dependency files read as text, or from Robotheca's editors.

Robotheca lists software as a reference: nothing is hosted or run here, and every fact links to where it was read.