irock 74M

I bought a irock 74m led keyboard, but got no way to control the led.

This is my solution.

I reverse engineer the usb packet in this google sheet:

https://docs.google.com/spreadsheets/d/1USv1qFaWV14PxGkvopRJYdi818f88eJyBioqb9oLgBw/edit?usp=sharing

this project current contains a http server and a bot.

server

the server current accept message like

{
    "mode": 3,
    "brightness": 3,
    "speed": 2
}

bot

the bot listen to /dev/input/event3, if there key input, it changes mode. but other stuff is also possible

build

mkdir build
cd build
cmake ..
make -j8

TODO

• convert http server to gRPC
• support custom commands