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Corne Cherry V3 Hotswap Split Ergo 40% Kit

38.7242.35

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

Easy to build, uses Pro Micro-compatible controllers.

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  • Layout *

  • Corne Cherry V3.2 Detail

    Please check this if you want PCBs with support for 5-column layout (we still have some PCBs without it).

  • Case Colour *

  • Add-ons *

    nice!nano V2 Wireless Controller

    25.05

    New batch expected 23 August Powerful wireless Pro Micro drop-in replacement

    AddRemove

    nice!nano V2 Wireless Controller

    (2 customer reviews)

    25.05

    New batch expected 23 August

    Powerful wireless Pro Micro drop-in replacement

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    ×

    Frood RP2040 Pro Micro Controller (Sold Out)

    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

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    ×

    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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    ×

    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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    ×

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

    1.27

    Type: SK6812 MINI-E (3535)

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    ×

    SK6812 (WS2812B) RGB LED Modules (10 pcs) – SK6812 (5050)

    1.21

    Type: SK6812 (5050)

    Read more…

    ×

    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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    ×

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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 power switch and battery connector
  • V3.2 PCBs support the 5-column (36-key) layout again (by snapping off the 6th column). Only available with acrylic plates.
  • 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:

Weight 0.26 kg
Plate Type

FR4 (PCB material), Acrylic Standard, Acrylic Tenting

Colour

Black, White

Stock Status

Coming Soon

Reviews

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Product Enquiry

🟠 We'll be at 30% capacity 25-28 September. 🟠
🟠 Reopening on Wed 10 May. Thanks for your patience! 🟠