2 layers136.9 × 98 mm Keybear chocolate, the printed circuit board in 3D

Keybear chocolate

Size: 136.9 × 98 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 109
Nets: 120
Pads: 769
Tracks, vias: 2,925, 409
Routed: Yes
KiCad: KiCad 7 (file 20221018)
Created: 27 Aug 2023
Updated: 21 Jul 2026

Overview

Keybear chocolate is an open-source printed circuit board by XpaceOff, from the XpaceOff/Keybear repository on GitHub. It is a 2-layer board of 136.9 × 98 mm with 109 parts on 120 nets, routed with 2,925 tracks and 409 vias.

It is built around the ATECC608A-SSHDA-T, PCF8523T and SK6812MINI-E. Its parts include 28 inductors, 24 switches, 23 diodes, 5 connectors and 4 ICs. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

README

README.md

Keybear

Keybear 3D Model

Directory Structure

firmware: contain files to setup the firmware of the board.
- kmk: kmk firmware config files.
keybear-chocolate: all files used to create the chocolate version of the board.
- case:
  - gcode_and_obj: Files used to print the case
  - plasticity_archive: old versions of the plasticity file.
  - keybear-choco_case_slim.plasticity: Latest plasticity file.
kicad_footprints: footprints used in my kicad projects.

Parts

109

Qty	Value	Footprint	References
28	SK6812MINI	kbd:SK6812MINI_xo_v02	L1, L2, L10, L11, L12, L13, L14, L15, L16, L17, L18, L19, L20, L21, L22, L25 +12
23	D	kbd:D3_SMD	D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D24 +7
21	SW_PUSH	kbd:Choc_Hotswap	SW1, SW2, SW3, SW4, SW10, SW11, SW12, SW13, SW14, SW15, SW16, SW17, SW18, SW19, SW20, SW21 +5
16		kbd:Jumper	JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9, JP11, JP12, JP13, JP14, JP15, JP16, JP17, JP18
5	HOLE	SofleKeyboard-footprint:HOLE_M2_TH	TH3, TH4, TH5, TH6, TH7
2	R	Resistor_SMD:R_1206_3216Metric	R1, R2
1		SofleKeyboard-footprint:Jumper	JP10
1	ATECC608A-SSHDA	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U3
1	BATT	kbd:StripBATT_xo	J2
1	BATT_SW	kbd:SW_SPDT_PCM12_2sides_xo	SW30
1	Conn_01x06_Socket	kbd:xo_header-0,5-6-2,5-V-SMD_1x06-1MP_P2.50mm	J1
1	LED	kbd:StripLED_xo	J3
1	MCP23017_ML	Package_DFN_QFN:QFN-28-1EP_6x6mm_P0.65mm_EP4.25x4.25mm	U2
1	OLED	kbd:OLED_xo_5pins	J4
1	PCF8523T	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U4
1	ProMicro	kbd:ProMicro_xo	U1
1	Rotary_Encoder_Switch	SofleKeyboard-footprint:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm-keebio_modified	SW24
1	SW_PUSH	kbd:Choc_Hotswap_1.5u	SW22
1	SW_PUSH	kbd:ResetSW	RSW1
1	USB_C_Plug	Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV	P1

Questions

How big is the Keybear chocolate PCB?

It measures 136.9 × 98 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Keybear chocolate use?

109 parts, built around the ATECC608A-SSHDA-T, PCF8523T and SK6812MINI-E. 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 Keybear chocolate KiCad files?

From the XpaceOff/Keybear repository on GitHub, at the commit this page was made from: the board is keybear-chocolate/pcb/keybear-chocolate.kicad_pcb and its schematic keybear-chocolate/pcb/keybear-chocolate.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

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

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

Category and platform

AVR (ATmega, ATtiny)

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/xpaceoff-keybear-keybear-chocolate" title="Keybear 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/xpaceoff-keybear-keybear-chocolate.jpg" alt="Keybear chocolate" width="1200" height="900">

A picture that opens the board, for a README

[![Keybear chocolate](https://pcbkit.io/embed/boards/xpaceoff-keybear-keybear-chocolate.jpg?size=s)](https://pcbkit.io/boards/xpaceoff-keybear-keybear-chocolate)

Source

Repository: XpaceOff/Keybear
Board file: keybear-chocolate/pcb/keybear-chocolate.kicad_pcb
Commit: 546f758
Licence: Not stated

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