2 layers134.1 × 107.6 mm KillerSplit choc right, the printed circuit board in 3D

KillerSplit choc right

Making a wireless ergonomic split keyboard

Size: 134.1 × 107.6 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 56
Nets: 45
Pads: 305
Tracks, vias: 287, 8
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 25 Aug 2025
Updated: 27 Dec 2025

Overview

KillerSplit choc right is an open-source printed circuit board by MrKillerShaunBa, from the MrKillerShaunBa/KillerSplit repository on GitHub. It is a 2-layer board of 134.1 × 107.6 mm with 56 parts on 45 nets, routed with 287 tracks and 8 vias.

Its parts include 23 switches, 21 diodes, 1 IC and 1 connector. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.

README

README.md

KillerSplit

An ergonomic, wireless, split, low-profile keyboard. This is a fusion between a Corne and a ZMK Voyager. It has a 6-column layout like the Corne, but the thumb buttons are placed like a Voyager. I got the inspiration and motivation after looking at so many cool designs in r/ErgoMechKeyboards so wanted to make one of my own.

Link to demo-https://www.youtube.com/shorts/nLBKlfsz7i4

oled

complete_2

Features

Column staggered
Ortholinear
42 keys
Low profile Choc Tactile Switches
Wireless
ZMK Firmware
Hotswappable

assembled left assembled right

CAD

Left	Right

PCB

schematic

Left	Right

ZMK Keymap

default lower raise

BOM

Product	Quantity	Source	Price(INR)	Price($)	Link
Kailh Choc Low Profile Switches	50	Typeractive	-	27.5	here
Battery Jack	2	Typeractive	-	2	here
Reset Button	2	Typeractive	-	1.50	here
Power Switch	2	Typeractive	-	1.50	here
Choc hotswap Sockets	50	Typeractive	-	7.50	here
MBK Choc Keycaps 1.5u	2	Typeractive	-	1.50	here
MBK Choc Keycaps 1u	40	Typeractive	-	12	here
Tenting Feet	4	Typeractive	-	15	here
Lithium Battery 110mah	2	Typeractive	-	8	here
Mill-Max Sockets and Pins (12 pin)	2 sets	Typeractive	-	13	here
Choc Switch Opener	1	Typeractive	-	3	here
PCB Left	5	JLCPCB	-	10.90	-
PCB Right	5	JLCPCB	-	10.90	-
JLC Shipping	-	JLCPCB	-	22.73	-
JLC Discount	-	JLCPCB	-	-20	-
Case and Plates	-	Print Legion	-	~5	Only Shipping
ProMicro nrf52840 Board	2	Probots	1,417	16.50	(Includes Shipping)here
Diodes 1n4148	5*10	StacksKB	75	0.85	here
Oled Display 0.91inch I2C	2	Probots	598	7.6	here
M2 Standoff and Screws (Assorted)	10 sets	StacksKB	421	4.8	(10x5mm standoff, 10x5mm screw, 10x8mm screw)here

Total (using coupon)= $152

Parts

Qty	Value	Footprint	References
21	1N4148	Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D3, D4, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21 +5
20	SW_Push_45deg	led:Hotswap_Choc_V1V2_Plated_1.00u_plate_cutout	SW1, SW2, SW3, SW4, SW5, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20 +4
8			, , , , , , ,
1	Conn_01x02_Socket	Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal	Battery1
1	LOGO	Photo:ok	G***
1	Nice_Nano_V2	ScottoKeebs_MCU:Nice_Nano_V2_Flipped	U1
1	OLED	hackpad:SSD1306-0.91-OLED-4pin-128x32_3d	J1
1	SW_Push	Button_Switch_SMD:Panasonic_EVQPUL_EVQPUC	SW23
1	SW_Push_45deg	led:Hotswap_Choc_V1V2_Plated_1.50u_plate_cutout	SW21
1	SW_SPDT_312	Button_Switch_SMD:SW_SPDT_PCM12	SW22

Questions

How big is the KillerSplit choc right PCB?

It measures 134.1 × 107.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the KillerSplit choc right use?

56 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 KillerSplit choc right KiCad files?

From the MrKillerShaunBa/KillerSplit repository on GitHub, at the commit this page was made from: the board is PCB/KillerSplit_choc_right.kicad_pcb and its schematic PCB/KillerSplit.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the KillerSplit choc right design in my own project?

Its repository states no licence, so its author keeps all rights: ask MrKillerShaunBa before reusing the design.

Category and platform

Keyboards and input nRF52 and nRF5x

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/mrkillershaunba-killersplit" title="KillerSplit choc right in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/mrkillershaunba-killersplit.jpg" alt="KillerSplit choc right" width="1200" height="900">

A picture that opens the board, for a README

[![KillerSplit choc right](https://pcbkit.io/embed/boards/mrkillershaunba-killersplit.jpg?size=s)](https://pcbkit.io/boards/mrkillershaunba-killersplit)

Source

Repository: MrKillerShaunBa/KillerSplit
Board file: PCB/KillerSplit_choc_right.kicad_pcb
Commit: 8a41b6c
Licence: Not stated
Copies: 2 copies in 1 repository

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