Skip to content
Kit orders placed today ship within 🔴 12-15 business days

Corne Cherry V3 Hotswap Split Ergo 40% Kit

(1 customer review)

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 *

  • 3 mm with a FR4 switch plate / 2 mm with an acrylic one

  • 3 mm with a FR4 switch plate / 2 mm with an acrylic one Required with a mid-layer

  • Fills the gap between the PCB and the bottom plate for neater look and improved sound & feel Requires switch plate foam

  • Mid Layer *

    Fills the gap between the PCB and the bottom plate for neater look and improved sound & feel

  • Case Colour *

  • Add-ons *

    nice!nano V2 Wireless Controller

    25.05

    Powerful wireless Pro Micro drop-in replacement

    AddRemove

    nice!nano V2 Wireless Controller

    (3 customer reviews)

    25.05

    Powerful wireless Pro Micro drop-in replacement

    Read more…

    ×

    Frood RP2040 Pro Micro Controller

    9.9814.52

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

    AddRemove

    Sale!

    Frood RP2040 Pro Micro Controller

    (2 customer reviews)

    9.9814.52

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

    Read more…

    ×

    Controller Sockets/Pins/Headers

    0.489.68

    Various sockets / pins for Pro Micro/nice!nano/Frood and similar controllers Pack for one controller

    AddRemove

    Controller Sockets/Pins/Headers

    0.489.68

    Various sockets / pins for Pro Micro/nice!nano/Frood and similar controllers

    Pack for one controller

    Read more…

    ×

    nice!view Power-Efficient 1″ LCD Display

    24.20

    Extremely power-efficient and fast LCD display Next batch expected around 19 September 2024

    AddRemove

    nice!view Power-Efficient 1″ LCD Display

    24.20

    Extremely power-efficient and fast LCD display

    Next batch expected around 19 September 2024

    Read more…

    ×

    OLED Display Module 0.91″ 128×32

    3.754.84

    0.91" OLED module with 128x32 pixel resolution

    AddRemove

    Sale!

    OLED Display Module 0.91″ 128×32

    3.754.84

    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

    5x5 mm Please note the housing is actually all-white

    AddRemove

    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…

    ×
  • We can solder the kit for you. It will add 4-7 days to the order processing time.
    Price is just for the service, no extra parts included.
    If you want the controllers to be removable, please include 2 packs of controller sockets + pins.

  • *

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 V3.4 modified by 42. Keebs to include a power switch and battery connector for wireless operation and native nice!view support.

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)
  • V3.3 PCBs support the power-efficient nice!view screens natively
  • V3.4 PCBs have solder bridges to select various combinations of nice!view and RGB support
  • Fairly easy to build – based on Pro Micro controllers, but uses SMD diodes
  • Tinned lead-free finish, black solder mask

⚠️💀 Warning: Never plug/unplug the TRRS cable while the keyboard is powered! It could damage the data pin of the controller. 💀⚠️

Build guide in the GitHub repository

Kit contents

  • 2x main PCB
  • 44x SMD diode (42 + 2 spare)
  • 42x Kailh hotswap socket
  • 2x TRRS socket
  • 2x SMD power switch
  • 2x Reset switch
  • Brass standoffs and screws
  • FR4 version:
    • 2x FR4 switch plate
    • Optional 3 mm switch plate foam
    • Optional 3 mm foam mid-layer
    • 2x bottom plate made from PCB material (FR4)
    • 2x clear acrylic covers
  • FR4 + acrylic version:
    • 2x FR4 switch plate
    • Optional 3 mm switch plate foam
    • Optional 2/3 mm foam/3 mm acrylic mid-layer
    • 2x 3 mm acrylic (optionally tenting) bottom plate
    • 2x acrylic covers (in a matching colour + clear ones in case of dark/opaque acrylic)
  • Acrylic version:
    • 2x 3 mm acrylic switch plate
    • Optional 2 mm switch plate foam
    • Optional 2/3 mm foam/3 mm acrylic mid-layer
    • 2x 3 mm acrylic bottom plate
    • 2x acrylic covers (in a matching colour + clear ones in case of dark/opaque acrylic)
    • 16x acrylic tenting spacers (tenting version only)

Required parts not included in the kit

  • 2x Pro Micro compatible controllers (Frood, nice!nano etc.)
  • 42x Cherry MX-compatible switches
  • TRRS cable (unless using nice!nanos)

Optional parts not included in the kit

  • OLED screens
  • nice!view screens
  • 12x WS2812B/SK6812 (5050) underglow RGB LEDs
  • 42x SK6812MINI-E in-switch RGB LEDs
Weight 0.26 kg
Plate Type

FR4 (PCB material), Acrylic Standard, Acrylic Tenting, FR4 + Acrylic Standard, FR4 + Acrylic Tenting

Colour

Black, White, Black v3.0.1

Stock Status

Coming Soon

1 review for Corne Cherry V3 Hotswap Split Ergo 40% Kit

  1. Vincent De Borger (verified owner)

    Very nice kit with all the necessary components. Petr was very helpful trying to figure out what I exactly needed to order.

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

Product Enquiry

⚠ 👉 We're dealing with order backlog, apologies for the delay 🙏 👈 ⚠
🟠 Reopening on Wed 10 May. Thanks for your patience! 🟠