JayK Pro

Full-size mechanical keyboard with USB-C, bluetooth, and lighting, inspired by the ONO-SENDAI MATRIX 83.

JayK with less features but lower cost can be found here.

Disclaimer

I have not printed this PCB out yet, and I am not 100% certain the design works. Please print with discretion.

Features

• TMK-based firmware
• Numpad on the left for comfort
• USB-C port for modernness
• Bluetooth enabled
• Per-key backlighting and underglow

Layout

Default Layer

Other Layers

JSON files for these layouts can be found here and here, for editing in KLE.

Major Components

• Microcontroller — Microchip's ATxmega128A1U
• Bluetooth Module — Microchip's RN4678
• LED Driver — ISSI's IS31FL3741
• USB-C Port — Amphenol's 12401610E4#2A
• Crystal — EPSON's FA-238

Tools

• Layout — Keyboard Layout Editor
• PCB — KiCad EDA
• Firmware
  • tmk_core
  • avr-gcc
  • dfu-programmer
• Models — Plate & Case Builder

KiCad Libraries

• kicad_lib_tmk
• keyboard_parts.pretty
• keebs.pretty
• jay-kicad-lib

Development

Clone this repository with:

git clone --recursive https://github.com/josuegaleas/JayK-Pro.git

Hardware

Within KiCad, navigate to the PCB folder and open JayK Pro.pro.

Using a grid size of 0.0234375 inches for editing the layout.

Software

Firmware can be compiled using make within the Firmware folder.

Refer to this for dependencies and programming.

References

• Layout — Physical Keyboard Layouts Explained In Detail
• PCB
  • Keyboard PCB Guide
  • MT-X1S USB Development Board
  • 40000ft's picoPoker
  • ahtn's keyplus_mini
  • Project-Aurora
• Firmware
  • TMK Keyboard Firmware Collection
  • How to build your very own keyboard firmware