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2 layers141.6 × 97.9 mmYuki pcb V01, the printed circuit board in 3D

Yuki pcb V01

crolbar/yuki9

my keyboard

Full screenGitHub.kicad_pcb
Size
141.6 × 97.9 mm
Copper layers
2
Thickness
1.6 mm
Parts
31
Nets
38
Pads
254
Tracks, vias
321, 0
Pours
170
Routed
Yes
KiCad
KiCad 8.0 (file 20240108)
Created
7 Apr 2024
Updated
5 Feb 2026

Overview

Yuki pcb V01 is an open-source printed circuit board by crolbar, from the crolbar/yuki repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 141.6 × 97.9 mm with 31 parts on 38 nets, routed with 321 tracks and 0 vias.

Its parts include 22 switches, 1 IC and 1 connector. It belongs with the keyboards and input boards and the STM32 boards of this library.

README

README.md

YUKI

YUKI is a split diodless keyboard with a column stagger layout heavily inspired by cantor.


YUKI Made with Keyberon


Layers

LayerDescription
Layer 0Firmware Dvorak
Layer 1Numbers & Symbols
Layer 2Less used keys & Macros
Layer 3Mouse movement & buttons
Layer 4Qwerty

Features

  • 44 keys, v0.1 - Cherry MX & v0.2 - Kailh Choc V1 switches
  • Uses only 1U keycaps
  • TRRS connection is used for communication between the two halves
  • 2 USB-C connectors, with a choice from which the keyboard should send keystrokes
  • Mouse control
  • OLED display (not installed in the v0.2 picture)

Bill of Materials

ProductQtyNote
YUKI PCB2KiCad project files can be found in yuki_pcb directory. I ordered them from JLCPCB. They are reversible so you will use the same pcb for both left and right.
STM32F401CCU62Can be found on aliexpress. I have ordered mine from a local vendor.
TRRS jacks2PJ-320A
TRRS cable13.5mm jack cable, with 3 stripes.
Switches44Cherry MX for v0.1 and Kailh Choc V1 for v0.2. Ordered from splitkb
Keycaps441U keycaps. Ordered from splitkb.

Flashing the firmware

You will need rust installed so:

text
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

cargo-binutils for stripping unused data from the rust binary and other optimizations:

text
rustup component add llvm-tools
cargo install cargo-binutils

dfu-util for flashing:

text
sudo pacman -S dfu-util

add the rust target for the MCU:

text
rustup target add thumbv7em-none-eabihf

then to compile the firmware:

text
cargo objcopy --bin yuki --release -- -O binary yuki.bin

for the right board add --features right

to flash enter dfu by holding BOOT clicking RESET and releasing BOOT and enter (can be tricky):

text
dfu-util -d 0483:df11 -a 0 --dfuse-address 0x08000000:leave -D yuki.bin"

After that to enter dfu just hold button 05 and 33 click reset and release the buttons.

Nix

if you are on NixOS you could use the devShell:

enter the dev shell:

text
nix develop

and use the flash script that can be found in flash.nix

text
flash right

Parts

31
QtyValueFootprintReferences
22KEYSWYUKI:CherryMX_revK00, K01, K02, K03, K04, K05, K10, K11, K12, K13, K14, K15, K20, K21, K22, K23 +6
3LOGOYUKI:RUST_GEARG***, G***, G***
1OLEDYUKI:OLEDDS1
1TRRSYUKI:MJ-4PP-9_Cantor_MX_TX-RX_CrossoverJ1
1YAAJ_WeAct_BlackPill_Part_LikeYUKI:YUKI_YAAJ_WeAct_BlackPill_2U1

The 28 most common of 31 parts.

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Questions

How big is the Yuki pcb V01 PCB?

It measures 141.6 × 97.9 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Yuki pcb V01 use?

31 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Yuki pcb V01 KiCad files?

From the crolbar/yuki repository on GitHub, at the commit this page was made from: the board is yuki_pcb/yuki_pcb_V01.kicad_pcb and its schematic yuki_pcb/yuki_pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Yuki pcb V01 design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).