A 40% mechanical keyboard.
This firmware was originally taken from a kbfirmware.json and converted through kbf_qmk_converter. You may find the original .json files here.
Make example for this keyboard (after setting up your build environment):
make kprepublic/bm43a:default
See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.