A compact 40% (12x4) ortholinear keyboard kit made and KPRepublic on AliExpress.
Make example for this keyboard (after setting up your build environment):
Note that this is a complete replacement for the firmware, so you won’t be using Bootmapper Client to change any keyboard settings, since not all the USB report options are supported.
In addition you may need the AVR toolchain and
bootloadHID for flashing:
$ brew cask install crosspack-avr $ brew install --HEAD https://raw.githubusercontent.com/robertgzr/homebrew-tap/master/bootloadhid.rb
In order to use the
./program script, which can reboot the board into
the bootloader, you’ll need Python 2 with PyUSB installed:
$ pip install pyusb
If you prefer, you can just build it and flash the firmware directly with
bootloadHID if you boot the board while holding down
L_Ctrl to keep it
in the bootloader:
$ make jj40 $ bootloadHID -r jj40_default.hex
L_Ctrl. This will force it to boot only the bootloader without loading the firmware. Once this is done, just reflash the board with the original firmware.
tools/README.mdfor more info.