2 layers138 × 90.6 mm Corne chocolate, the printed circuit board in 3D

Corne chocolate

Place to store keyboard gerbers

Size: 138 × 90.6 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 83
Nets: 58
Pads: 538
Tracks, vias: 1,202, 84
Pours: 1
Routed: Yes
KiCad: KiCad 6 (file 20211014)
Created: 22 Jan 2023
Updated: 21 Jun 2025

Overview

Corne chocolate is an open-source printed circuit board by JonMuller, from the JonMuller/gerbers repository on GitHub, published under the MIT licence. It is a 2-layer board of 138 × 90.6 mm with 83 parts on 58 nets, routed with 1,202 tracks and 84 vias.

It is built around the TC1. Its parts include 22 switches, 21 diodes, 3 connectors and 1 IC. It belongs with the keyboards and input boards of this library.

Main components

TC1
-- Toggle Switches ROHSC&KPre-Ordered Products

README

README.md

gerbers

Place to store keyboard gerbers

These are gerbers for keyboards I have tweaked to suit my needs either by adding or subtracting things from the originals.

Parts

Qty	Value	Footprint	References
21	D	Keebio-Parts:Diode-dual	D1, D2, D3, D4, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21 +5
21	SW_PUSH	kicad extras:JHM_Kailh_socket_PG1350_reversible	SW1, SW2, SW3, SW4, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21 +5
1	Alt Battery Con	Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical	J9
1	B5v	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP3
1	BC0	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP44
1	BC1	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP6
1	BC2	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP7
1	BC3	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP8
1	BC4	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP9
1	BCLK	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP43
1	BDI	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP42
1	BGND	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP4
1	BR0	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP38
1	BR1	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP39
1	BR2	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP40
1	BR3	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP41
1	BVCC	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP5
1	BottomCLK	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP12
1	BottomCS	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP1
1	BottomDI	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP14
1	BottomGND	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP10
1	Conn_01x02_MountingPin	Connector_Molex:Molex_Pico-EZmate_78171-0002_1x02-1MP_P1.20mm_Vertical	J8
1	SW_SPDT	kicad extras:SW_Slide_1P2T_CK_OS102011MS2Q_jhm	SW23
1	SeeeduinoXIAO_JHM	kicad extras:Seeeduino XIAO-MOUDLE_JHM_reversible	U1
1	TC0	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP28
1	TC1	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP33
1	TC2	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP34
1	TC3	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP35
1	TC4	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP36
1	TCLK	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP27
1	TDI	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP26
1	TGND	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP31
1	TR0	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP22
1	TR1	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP23
1	TR2	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP24
1	TR3	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP25
1	TVCC	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP32
1	Top5v	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP37
1	TopCLK	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP18
1	TopCS	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP29
1	TopDI	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP16
1	TopGND	Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm	JP20
1	nice!view	Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical	J1

Questions

How big is the Corne chocolate PCB?

It measures 138 × 90.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Corne chocolate use?

83 parts, built around the TC1. 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 Corne chocolate KiCad files?

From the JonMuller/gerbers repository on GitHub, at the commit this page was made from: the board is corne-choc-xiao/experimental/corne-chocolate.kicad_pcb and its schematic corne-choc-xiao/experimental/corne-chocolate.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Corne chocolate design in my own project?

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

Category and platform

Keyboards and input

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/jonmuller-gerbers" title="Corne chocolate 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/jonmuller-gerbers.jpg" alt="Corne chocolate" width="1200" height="900">

A picture that opens the board, for a README

[![Corne chocolate](https://pcbkit.io/embed/boards/jonmuller-gerbers.jpg?size=s)](https://pcbkit.io/boards/jonmuller-gerbers)

Source

Repository: JonMuller/gerbers
Board file: corne-choc-xiao/experimental/corne-chocolate.kicad_pcb
Commit: 53fe015
Licence: MIT

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