History

Vadim Brodsky e094cd42b5 Add support for the JJ40 Keyboard (#1834 ) * Add support for JJ40 * Update readme * Update maintaner		2017-10-13 10:20:56 -10:00
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keymaps/default
config.h
i2c.c
i2c.h
jj40.c
jj40.h
matrix.c
program
README.md	Add support for the JJ40 Keyboard (#1834 )	2017-10-13 10:20:56 -10:00
rules.mk
usbconfig.h

README.md

jj40

A compact 40% (12x4) ortholinear keyboard kit made and KPRepublic on AliExpress.

Keyboard Maintainer: QMK Community
Hardware Supported: Atmega32A
Hardware Availability: AliExpress

Make example for this keyboard (after setting up your build environment):

make jj40-program

See build environment setup then the make instructions for more information.

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

Troubleshooting

Try plugging the board in while pressing 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.
Sometimes USB hubs can act weird, so try connecting the board directly to your computer or plugging/unplugging the USB hub.