OpenI6X/opentx

Custom OpenTX/EdgeTX for FlySky FS-i6X

C++

247

9,625 commits

updated Sep 20, 2026

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edgetx

flysky

fs-i6x

i6x

openi6x

opentx

radio

transmitter

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Source	Message	Score	Date
	I used AI pair-programming to write a clean-slate bare-metal Rust OS for a $40 RC transmitter (STM32F072, no_std, 128KB Flash) (r/rust) Hey everyone, I've been working on an experimental firmware in bare-metal #!\[no\_std\] Rust for the FlySky FS-i6X RC airplane transmitter. It's up on GitHub at [ferrox-rc/flysky-i6x-rs](https://github.com/ferrox-rc/flysky-i6x-rs) and I put together a small site with specs and flashing notes at…	0	Sep 20, 2026

README

OpenI6X

Goal of the project is to bring customized EdgeTX / OpenTX to Flysky I6X and other STM32F0 based radios.

Join our Discord, RCGroups or Telegram to contribute, discuss or get help.

New contributors are very welcome.
You can help by improving documentation, adding or suggesting features, fixing or reporting bugs.

Instructions

User interface and differences to official EdgeTX / OpenTX radios.
EdgeTX manual, mostly relevant to OpenI6X.
How to install, upgrade or restore firmware
Developers guide, how to build
Modifications

See Wiki for more.

Comparison with original firmware

Feature	Flysky i6X	OpenI6X
Channels	6/10	16
Mixers	3	32
Models	20	20 / unlimited^[1]
Protocols	AFHDS, AFHDS2A, PPM	16Ch AFHDS2A, PPM, CRSF
Trainer	PPM	PPM, SBUS
Timers	_	✓
Voice annoucements	_	✓^[2]
Variometer	_	✓
ExpressLRS ready	_	✓ Configurator built-in (no need for LUA)
Adjustable screen brightness	_	✓^[3]
USB Modes	Joystick	Joystick, Storage, Serial (Telemetry mirror, Debug)
AUX Serial port	_	✓ SBUS Trainer, Telemetry mirror, Debug
Flysky FS-HZCZ03-ADJ Gimbal support	_	✓^[4]
Languages	EN, CN	PL, EN, CZ, DE, ES, FI, FR, IT, NL, PT, SE

_{[1] Unlimited by using USB mass storage mode eeprom backup/restore.}
_{[2] By adding DFPlayer, see instructions in wiki.}
_{[3] By wiring 2 pads, see instructions in wiki.}
_{[4] See instructions in wiki.}

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