Corne Cherry Hotswap Split Ergo 40% Keyboard Kit
Designed by Kosuke Adachi (a.k.a. foostan). The designer receives a portion of the proceeds from every sale.
This is version 3.1/3.2 modified by 42. Keebs to include a power switch and battery connector for native wireless operation.
Build your very own custom split keyboard from scratch!
- Split 12×3 + 6 (42 keys) 40% ortho/ergo layout
- Supports Cherry MX-compatible switches
- Uses Kailh/Gateron MX hotswap sockets
- Supports in-switch RGB LEDs and RGB underglow (RGB LEDs available as an add-on)
- Optional OLED screens
- Includes a sliding SMD power switch and contacts for a battery on the PCB (no connector needed, battery to be soldered directly to the PCB for simplicity)
- V3.2 PCBs support the 5-column (36-key) layout again (by snapping off the 6th column)
- Fairly easy to build – based on Pro Micro controllers, but uses SMD diodes
- Tinned lead-free finish, black solder mask
Build guide in the GitHub repository
Kit includes:
- 2x main PCB
- 44x SMD diode (42 + 2 spare)
- 42x Gateron hotswap socket
- 2x TRRS socket
- 2x SMD power switch
- 2x Reset switch
- Brass standoffs and screws
- Acrylic covers
- FR4 version:
- 2x bottom plate made from PCB material (FR4)
- 2x FR4 switch plate
- Acrylic standard version:
- 2x acrylic switch plate
- 2x acrylic bottom plate
- Acrylic tenting version:
- 2x acrylic tenting switch plate
- 2x acrylic tenting bottom plate
- 16x acrylic spacers
Available optional add-ons:
- Pro Micros
- OLED screens
- TRRS cable
Other parts required to finish build:
- 2x Pro Micro compatible controllers (Frood, nice!nano etc.)
- 42x Cherry MX-compatible switches
Other optional parts not included in the kit:
- 42x SK6812MINI-E in-switch RGB LEDs
- 12x WS2812B/SK6812 (5050) underglow RGB LEDs
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