A4Tech Bloody Backlight Level Utility

Set backlight level for the A4Tech Bloody mice.

Initial idea, reverse-engineering and all credit goes to the original project: https://github.com/maxmati/a4tech-bloody-linux-driver.

This utility is written in C, built with a simple Makefile, accepts a command line option and includes a systemd unit file.

Contribution

If you want to help reverse-engineer the mice protocol or contribute in a meaningful way, please consider https://gitlab.com/C0rn3j/a4tech_bloody_p85_driver instead.

Compile and install on distributions with systemd:

make
sudo cp bloody /usr/local/bin
sudo cp mousebacklight.service /etc/systemd/system
sudo systemctl enable --now mousebacklight

bloody [0|1|2|3]

0 turns off backlight completely, while 3 sets it to the maximum brightness.

Look into the source code.

This utility changes the backlight level for all supported mice simultaneously.