4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers83.8 × 97.5 mm
GBCartPad
davidshch/GBCartPad1A 16-key Game Boy Cartridge Macropad with an OLED display and RGB LEDs for each key that uses KMK firmware!
- Size
- 83.8 × 97.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 54
- Nets
- 46
- Pads
- 240
- Tracks, vias
- 367, 29
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Jul 2025
- Updated
- 8 Jul 2025
Overview
GBCartPad is an open-source printed circuit board by davidshch, from the davidshch/GBCartPad repository on GitHub. It is a 2-layer board of 83.8 × 97.5 mm with 54 parts on 46 nets, routed with 367 tracks and 29 vias.
It is built around the SK6812MINI-E. Its parts include 32 diodes, 16 switches, 1 IC and 1 connector. It belongs with the lEDs and displays and keyboards and input boards and the RP2040 boards of this library.
Main components
1README
README.mdGBCartPad 👾
A 16-key Game Boy Cartridge Macropad with an OLED display and RGB LEDs for each key that uses KMK firmware!
Why'd I make it
I've always wanted to make a full-stack hardware project and design my own PCB, so this was my first introduction to that. I also love Nintendo and thought the Game Boy cartridge design would make a really nice case for something like a macropad. I'll probably use it for basic things, such as a numpad for my laptop and some shortcuts I use, but the important part for me is that it's built and working. It was a great learning experience overall, and it will definitely help me with future hardware projects I want to make.
BOM
- XIAO RP2040
- 16x 1N4148 Diodes
- 0.91in OLED Display
- 16x SK6812 RGB LEDs
- 16x Cherry MX Switches
- 5x M3x16 Bolt
- 5x M3 Heatset
- 16x Blank DSA Keycaps
CAD Model
Schematic
PCB
Parts
54| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 16 | SK6812MINI | ScottoKeebs_Components:LED_SK6812MINI | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9, LED10, LED11, LED12, LED13, LED14, LED15, LED16 |
| 16 | SW_Push | Switch_Keyboard_Cherry_MX:SW_Cherry_MX_PCB_1.00u | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14, SW15, SW16 |
| 4 | LOGO | LOGO | G***, G***, G***, G*** |
| 1 | OLED_128x32 | KiCad-SSD1306-0.91-OLED-4pin-128x32.pretty-master:SSD1306-0.91-OLED-4pin-128x32 | J1 |
| 1 | XIAO-RP2040-DIP | Seeed Studio XIAO Series Library:XIAO-RP2040-DIP | U1 |
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Questions
How big is the GBCartPad PCB?
It measures 83.8 × 97.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the GBCartPad use?
54 parts, built around the 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 GBCartPad KiCad files?
From the davidshch/GBCartPad repository on GitHub, at the commit this page was made from: the board is pcb/GBCartPad.kicad_pcb and its schematic pcb/GBCartPad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the GBCartPad design in my own project?
Its repository states no licence, so its author keeps all rights: ask davidshch before reusing the design.