The following is the QMK Firmware for the Kyuu compatible Hotswap PCB
Make example for this keyboard (after setting up your build environment):
make fjlabs/kyuu:default
See the build environment setup and the make instructions for more information. Brand new to QMK? Start with our Complete Newbs Guide.
You can enter the bootloader by pressing the two reset pads on the back of the PCB with tweezers.