Suggest an alternative to

Custom-Keyboard-Firmware

Custom QMK firmware for some mechanical keyboards

Why do you think that https://github.com/waffle87/protoncrkbd is a good alternative to Custom-Keyboard-Firmware

A URL to the alternative repo (e.g. GitHub, GitLab)

Here you can share your experience with the project you are suggesting or its comparison with Custom-Keyboard-Firmware. Optional.

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