Skip to content
Kit orders placed today ship within 🟢 2-3 business days

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.

Read more…

  • Layout *

  • Case Colour *

  • 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)

    Read more…

    ×

    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

    Read more…

    ×

    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.

    Read more…

    ×

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

    1.27

    Type: SK6812 MINI-E (3535)

    Read more…

    ×

    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

    Read more…

    ×
  • FR4 Kit 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

    Read more…

    ×
  • Acrylic Case 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)

    Read more…

    ×

Product total

Options total

Grand total

SKU: N/A Categories: , Tags: , ,

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:

Weight 0.26 kg
Plate Type

FR4 (PCB material), Acrylic Standard, Acrylic Tenting

Colour

Black, White

Stock Status

Coming Soon

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Enquiry

Sorry, we're currently unable to ship to Israel 🇮🇱🧡
🟠 Reopening on Wed 10 May. Thanks for your patience! 🟠