qmk-firmware/keyboards/keebio/bdn9/keymaps/bcat
..
keymap.c
readme.md

bcat's BDN9 layout

This is a simple macropad with seven keys and two rotary encoders. We use one encoder for volume and the other for backlight brightness. Six of the keys are F keys (for gaming, since I use keyboards without function keys normally), with the remaining key a layer toggle that switches the function keys between F1-F6 and F7-F12.