The following is the QMK Firmware for the 7V Hotswap PCB by FJLaboratories.
Make example for this keyboard (after setting up your build environment):
make fjlabs/7vhotswap: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 shorting the RST pads on the back of the PCB while the PCB is plugged into the computer.