2 layers294 × 114 mm Cybdokeebs keyboard, the printed circuit board in 3D

Cybdokeebs keyboard

ecosystem of hotswappable keyboard modules

Size: 294 × 114 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 176
Nets: 130
Pads: 792
Tracks, vias: 1,254, 385
Pours: 1
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 23 Apr 2026
Updated: 27 Jun 2026

Overview

Cybdokeebs keyboard is an open-source printed circuit board by Cybdo, from the Cybdo/CybdoKeebs repository on GitHub. It is a 2-layer board of 294 × 114 mm with 176 parts on 130 nets, routed with 1,254 tracks and 385 vias.

It is built around the BM03B-SRSS-TB(LF)(SN) and 1N4148W. Its parts include 63 switches, 61 diodes, 16 connectors, 15 capacitors and 8 resistors. It belongs with the keyboards and input boards and the RP2350 boards of this library.

Main components

README

README.md

CybdoKeebs!

A hotswappable ecosystem of i2c powered keyboard modules!

I made this project because I wanted to make something cooler than a macropad, and being able to just swap stuff around seemed really sick.

Inspired by Ocreeb!

File structure

everything for each module is found under modules/[module name], including CAD files, EDA files and firmware.

Features

plug and play
hotswappable modules
exposed I2C buses
fully open source!
supports any MX-footprint keyswitches!
inbuilt USB hub in the controller

Firmware

Firmware runs on circuitpython, and the firmware for each module is under modules/[module name]/firmware. Flash it using the SWD ports on each module, or via USB on the controller hub. You may need a SWD to USB converter, which can be made using a Raspberry Pi Pico.

Custom modules

Each module is made as a composite of "sub units", each being 6cm tall and 5cm wide, with male pogo pins on the top and left sides, and female recievers on the bottom and right sides. These can be found here: https://www.aliexpress.com/item/1005005284441979.html

Assembly

Everything is designed to be tray mounted, as to not obstruct the pogo pin assemblies! This means, the plate snaps into and are held up by keyswitches.

To put the keyboard together, put 4 keyswitches in each of the corners of the plate, then put the keyswitches through their sockets. After checking that everything is aligned, put in the rest of the switches!

BOM

found at bom.csv, assuming 1 controller hub, one keyboard and one macropad

Schematics

Hub

Macropad

Keyboard

PCB

Hub

Macropad

Keyboard

Acknowledgements

Category and platform

Keyboards and input RP2350

Project files

Show this board on your page

https://pcbkit.io/boards/Cybdo/CybdoKeebs

The board's own page, for a message or a post.

Source

Repository: Cybdo/CybdoKeebs
Board file: modules/keyboard/PCB/cybdokeebs_keyboard.kicad_pcb
Commit: 34a8736
Licence: Not stated

Parts

176

Qty	Value	Footprint	References
61	1N4148W	Diode_SMD:D_SOD-123	D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +45
46	SW_Push	PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_1.00u	SW10, SW11, SW12, SW13, SW14, SW15, SW18, SW19, SW20, SW21, SW22, SW23, SW24, SW25, SW26, SW27 +30
16	Conn_01x05_Pin	imports:pogo 5pin 2.54	J1, J2, J3, J4, J5, J6, J7, J8, J9, J10, J11, J12, J13, J14, J15, J16
9	100nF	Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C1, C3, C4, C5, C6, C7, C8, C9, C10
7	SW_Push	PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_1.25u	SW56, SW57, SW58, SW60, SW61, SW62, SW63
6	10kR	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R1, R2, R4, R6, R7, R8
4	4.7uF	Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C2, C13, C14, C15
3			, ,
2	0.1uF	Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder	C16, C17
2	1kR	Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder	R9, R10
2	SW_Push	PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_2.25u	SW43, SW44
2	SW_Push	PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_1.50u	SW17, SW30
1	3.3uF	imports:INDC1608X95N	L1
1	BM03B-SRSS-TB	easyeda2kicad:CONN-SMD-3P-P1.00_BM03B-SRSS-TB-LF-SN	U3
1	BOOTSEL	Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK	SW1
1	Backspace Stabiliser	PCM_Mounting_Keyboard_Stabilizer:Stabilizer_Cherry_MX_2.00u	H1
1	Enter Stabiliser	PCM_Mounting_Keyboard_Stabilizer:Stabilizer_Cherry_MX_2.00u	H2
1	LShift Stabiliser	PCM_Mounting_Keyboard_Stabilizer:Stabilizer_Cherry_MX_2.00u	H4
1	RESET	Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK	SW2
1	RP2350_60QFN	RP2350_60QFN_minimal:RP2350-QFN-60-1EP_7x7_P0.4mm_EP3.4x3.4mm_ThermalVias	U2
1	RShift Stabiliser	PCM_Mounting_Keyboard_Stabilizer:Stabilizer_Cherry_MX_2.00u	H3
1	SW_Push	PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_1.75u	SW31
1	SW_Push	PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_6.25u	SW59
1	SW_Push	PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_2.75u	SW55
1	SW_Push	PCM_Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_MX_2.00u	SW16
1	Spacebar Stabiliser	PCM_Mounting_Keyboard_Stabilizer:Stabilizer_Cherry_MX_6.25u	H5
1	TCA4307DGKR	easyeda2kicad:VSSOP-8_L3.0-W3.0-P0.65-LS4.9-BL	U1

The 175 most common of 176 parts.

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174 parts

Questions

How big is the Cybdokeebs keyboard PCB?

It measures 294 × 114 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Cybdokeebs keyboard use?

176 parts, built around the BM03B-SRSS-TB(LF)(SN) and 1N4148W. 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 Cybdokeebs keyboard KiCad files?

From the Cybdo/CybdoKeebs repository on GitHub, at the commit this page was made from: the board is modules/keyboard/PCB/cybdokeebs_keyboard.kicad_pcb and its schematic modules/controller_hub/pcb/CybdoKeebs_hub.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Cybdokeebs keyboard design in my own project?

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

Overview

Main components

BM03B-SRSS-TB(LF)(SN)

1N4148W

README

CybdoKeebs!

File structure

Features

Firmware

Custom modules

Assembly

BOM

Schematics

Hub

Macropad

Keyboard

PCB

Hub

Macropad

Keyboard

Acknowledgements

Parts

More from Cybdo/CybdoKeebs

Similar boards

Questions

How big is the Cybdokeebs keyboard PCB?

What parts does the Cybdokeebs keyboard use?

Where can I download the Cybdokeebs keyboard KiCad files?

Can I use the Cybdokeebs keyboard design in my own project?