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2 layers90 × 73 mmKeyboard, the printed circuit board in 3D

hacked

Size
90 × 73 mm
Copper layers
2
Thickness
1.6 mm
Parts
24
Nets
27
Pads
97
Tracks, vias
156, 0
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
22 Jun 2026
Updated
30 Jun 2026

Overview

Keyboard is an open-source printed circuit board by DamianDev123, from the DamianDev123/Hacking_a_Keyboard repository on GitHub. It is a 2-layer board of 90 × 73 mm with 24 parts on 27 nets, routed with 156 tracks and 0 vias.

It is built around the WS2812B. Its parts include 13 diodes, 9 switches, 1 IC and 1 connector. It belongs with the keyboards and input boards of this library.

Main components

1

README

README.md

Hacking_a_Keyboard

Hacking_a_Keyboard is a 9 key macropad with a OLED display, and WS2812B LEDs. It runs KMK firmware.


Features:

  • 128×32 OLED display
  • 4× WS2812B RGB LEDs
  • 9 keys

CAD Model:

Everything fits together using 6 M3 bolts and heat-set inserts:

  • 4 for the case
  • 2 for securing the PCB

It consists of 3 printed parts:

  • Bottom case
  • Top cover Screenshot 2026-06-29 at 7 42 36 AM

Made in Onshape.


PCB:

Designed in KiCad with silkscreen imported from Figma.

Schematic: Screenshot 2026-06-29 at 8 33 09 AM

PCB: Screenshot 2026-06-29 at 8 32 51 AM

Firmware Overview:

This hackpad uses KMK firmware.

  • 9 keys:

    • randoms keys
  • RGB:

    • Gaming
  • OLED display:

    • TODO

More features may be added later.


BOM:

Everything needed to build the hackpad:

  • 9× Cherry MX switches
  • 9× DSA keycaps
  • 4× M3×5×4 heat-set inserts
  • 6× M3×16 SHCS bolts
  • 9× 1N4148 DO-35 diodes
  • 4× WS2812B LEDs
  • 1× 0.91" 128×32 OLED display
  • 1× Seeed XIAO RP2040
  • 1× case (2 printed parts)

Parts

24
QtyValueFootprintReferences
9DDiode_THT:D_DO-35_SOD27_P7.62mm_HorizontalD1, D2, D3, D4, D5, D6, D7, D8, D9
9SW_PushButton_Switch_Keyboard:SW_Cherry_MX_1.00u_PCBSW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9
4WS2812Bfootprints:SK6812MINI-E_fixedD10, D11, D12, D13
1MOUDLE-SEEEDUINO-XIAOfootprints:XIAO-Generic-Hybrid-14P-2.54-21X17.8MMU1
1SCREENConnector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_VerticalJ1

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Questions

How big is the Keyboard PCB?

It measures 90 × 73 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Keyboard use?

24 parts, built around the WS2812B. 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 Keyboard KiCad files?

From the DamianDev123/Hacking_a_Keyboard repository on GitHub, at the commit this page was made from: the board is PCB/Keyboard.kicad_pcb and its schematic PCB/Keyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Keyboard design in my own project?

Its repository states no licence, so its author keeps all rights: ask DamianDev123 before reusing the design.