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Corne Classic Split Ergo 40% Kit

31.4632.67

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

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

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  • Switch Type *

    The switch type affects the length of supplied standoffs and thickness of acrylic plates

  • Diode Type *

    Through-hole diodes might be a bit easier to work with, but if you have a decent pair of tweezers and a reasonable iron, SMD diodes are actually quicker/simpler to solder - no faffing about with legs :)

  • Switch Plate Colour *

    For Kailh Choc switches, the switch plate is 2 mm thick with limited colour options

  • Case Colour *

    For Kailh Choc Switches, this only applies to the bottom plate

  • Add-ons *

    nice!nano V2 Wireless Controller (Sold Out)

    25.05

    Powerful wireless Pro Micro drop-in replacement Looking for a cheaper alternative? Check out the nRF Pro Micro wireless controller - a drop-in replacement that uses the same firmware (ZMK).

    AddRemove

    nice!nano V2 Wireless Controller

    (2 customer reviews)

    25.05

    Powerful wireless Pro Micro drop-in replacement

    Looking for a cheaper alternative? Check out the nRF Pro Micro wireless controller – a drop-in replacement that uses the same firmware (ZMK).

    Read more…

    ×

    Frood RP2040 Pro Micro Controller

    13.3114.52

    Powerful and affordable RP2040-based Pro Micro drop-in replacement

    AddRemove

    Frood RP2040 Pro Micro Controller

    (1 customer review)

    13.3114.52

    Powerful and affordable RP2040-based Pro Micro drop-in replacement

    Read more…

    ×

    Mill Max “315” Sockets / “3320” Pins for Pro Micro

    3.999.68

    Precision low-profile sockets / pins for Pro Micro (and compatible)

    AddRemove

    Mill Max “315” Sockets / “3320” Pins for Pro Micro

    3.999.68

    Precision low-profile sockets / pins for Pro Micro (and compatible)

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    ×

    OLED Display Module 0.91″ 128×32

    4.36

    0.91" OLED module with 128x32 pixel resolution

    AddRemove

    OLED Display Module 0.91″ 128×32

    4.36

    0.91″ OLED module with 128×32 pixel resolution

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    ×

    SK6812 (WS2812B) RGB LED Modules (10 pcs) – SK6812 MINI (3535)

    1.21

    Type: SK6812 MINI (3535)

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    ×

    Low Profile OLED Socket (1 pc)

    1.09

    Low profile socket good for socketing OLED screens with standard (thick, square) header pins Includes a single 4-pin one row socket.

    AddRemove

    Low Profile OLED Socket (1 pc)

    1.09

    Low profile socket good for socketing OLED screens with standard (thick, square) header pins

    Includes a single 4-pin one row socket.

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    ×

    Plain/Braided/Metal TRRS cable (Sold Out)

    3.876.05

    TRRS cable for use with split keyboards

    AddRemove

    Plain/Braided/Metal TRRS cable

    3.876.05

    TRRS cable for use with split keyboards

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    ×
  • FR4 Add-ons *

    Standard Laser-cut Switch Plate Foam – Corne

    10.89

    Not for use with a Tenting/Tilting kit Select special version below.

    AddRemove

    Standard Laser-cut Switch Plate Foam – Corne

    10.89

    Kit: Corne

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    ×
  • Acrylic Add-ons *

    Standard Laser-cut Switch Plate Foam – Corne w/ Tenting (2 mm)

    10.89

    Only for Corne MX kit with a 3 mm switch plate (e.g. Tenting/Tilting kit)

    AddRemove

    Standard Laser-cut Switch Plate Foam – Corne w/ Tenting (2 mm)

    10.89

    Kit: Corne w/ Tenting (2 mm)

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    ×

Product total

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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
  • FR4 case:
    • 2x FR4 switch plate
    • 2x bottom plate made from PCB material (FR4)
  • Acrylic case:
    • 2x acrylic switch plate (standard or tenting)
    • 2x acrylic bottom plate (standard or tenting)
  • 42x through-hole or SMD diodes (selectable)
  • 2x TRRS sockets
  • 2x reset switches
  • 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:

Weight 0.26 kg
Plate Type

FR4 (PCB material), Acrylic Standard, Acrylic Tenting

Colour

Black, White

Stock Status

Coming Soon

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