This is an utility for programming small keyboards like this one:

or this one:

There are several modifications of such keyboards with different number of buttons and knobs. Utility was tested to work with:

• 3×3 with 2 knobs
• 3×4 with 2 knobs (Bluetooth version)
• 1x3 with 1 knob

Such keyboards are popular on AliExpress and seller usually sends software for programming, but it:

• requires Windows,
• is very ugly and inconvenient,
• can only program one key at a time
• don't expose all keyboard features

Sorry, right now there are no prebuilt binaries, may be fixed later. Install cargo utility using rustup, then execute cargo install ch57x-keyboard-tool.

Now create you own config from provided example-mapping.yaml, and apply:

ch57x-keyboard-tool upload < your-config.yaml

You can also change LED configuration, if you keyboard supports it:

ch57x-keyboard-tool led 1

If you have any troubles using this software, please provide diagnostics.

ioreg -w0 -l -p IOUSB

or

system_profiler SPUSBDataType

lsusb -v

Most simple (and cross-platform) way I've found is using keyboard and mouse Python modules.

Monitoring keyboard:

pip3 install keyboard
sudo python3 -m keyboard

Monitoring mouse:

# Latest published 'mouse' module doesn't support MacOS, so use latest version from Git:
git clone https://github.com/boppreh/mouse
cd mouse
python3 -m mouse