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Corne Classic Split Ergo 40% Kit (Black)


Build your very own split ergo 40% custom keyboard from scratch!

Easy to build, uses Pro Micro (or compatible) controllers.

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Diode type

    Preferred diode type. If unsure, select through hole. If you want to use Choc switches, select SMD.


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SKU: K-CORNE-CLS-BLK Categories: , Tags: ,

Corne Classic Split Ergo 40% Keyboard Kit

Designed by Kosuke Adachi (a.k.a. foostan). The designer receives a portion of the proceeds from every sale.

Build your very own custom split keyboard from scratch!

  • Split 12×3 + 6 (40%-ish) ortho/ergo layout
  • PCB supports Cherry MX-compatible, Kailh Choc and Alps switches. However, a special plate is required for Alps switches (acrylic plate available on request)
  • Supports in-switch RGB LEDs and RGB underglow (RGB LEDs not currently included)
  • Optional OLED screens
  • Very easy to build – based on Pro Micro controllers
  • Tinned lead-free finish, black solder mask

Build guide in the GitHub repository

Kit includes:

  • 2x main PCB
  • 2x bottom plate made from PCB material (FR4)
  • 2x FR4 switch plate
  • 42x through-hole or SMD diode (selectable)
  • 2x TRRS socket
  • 2x reset switch
  • Brass standoffs and screws
  • Acrylic covers

Available optional add-ons:

  • Pro Micros / USB-C Pro Micros / Elite-C
  • OLED screens
  • TRRS cable

Other parts required to finish build:

  • 2x Pro Micro or compatible controllers (Elite-C etc.)
  • 42x Cherry MX-compatible, Kailh Choc or Alps switches

Other optional parts not included in the kit:

  • In-switch/underglow RGB LEDs (54 needed)
Weight 0.26 kg


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