4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers67.2 × 84.7 mm
Macropadv3
cubit010/Cubitpad1macropad
- Size
- 67.2 × 84.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 34
- Pads
- 164
- Tracks, vias
- 262, 29
- Pours
- 14
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Nov 2025
- Updated
- 18 Feb 2026
Overview
Macropadv3 is an open-source printed circuit board by cubit010, from the cubit010/Cubitpad repository on GitHub, published under the MIT licence. It is a 2-layer board of 67.2 × 84.7 mm with 36 parts on 34 nets, routed with 262 tracks and 29 vias.
It is built around the SK6812MINI-E. Its parts include 18 diodes, 10 switches, 2 resistors and 1 IC. It belongs with the keyboards and input boards and the RP2040 boards of this library.
Main components
1README
README.mdCubitpad
The Cubitpad is a macropad that is designed to maximize functionality in the smallest footprint. It utilizes all pins to their maximum extent on the Seeeduino XIAO RP2040 for the most features, which includes: NKRO 3x3 macro, rotary encoder with push function, and a 0.91" OLED monochrome screen, the keypad also being backlit with neopixels for some flair
Usage
To use, one should flash their xiao rp2040 with the correct circuitpython .uf2 file, upload the code file, as well as libraries and linked images, save, and you're good to go! you can customize what each key does, lighting color, text displays, etc all within the code.py file
Creation
This was initially created as my own current keyboard lacks a rotary encoder, and I wanted one for volume and other controls, which then spiraled into this project
Image
Cad
PCB
Schematic
Case by itself
Firmware
- KMK based,
- Screen used for identifying layers, icon display, and signature display
- Neopixel used for backlight
- Custom rotary encoder decoding software from one analog pin
- Custom Key object designed for the rotary encoder multi function button
- Advanced use of macros and hotkeys for daily use
BOM
| Qty | Item | Notes |
|---|---|---|
| 1 | SEEEDUINO XIAO RP2040 | Microcontroller board |
| 9 | MX-style switches | |
| 9 | 1N4148 through-hole diodes | For switch matrix |
| 1 | SSD1306 128x32 OLED 0.91" | I2C display |
| 9 | Blank DSA keycaps | |
| 1 | 1x4 2.54mm female header | For raising display height |
| 1 | EC11 rotary encoder | |
| 1 | 10kΩ metal film resistor | Part of voltage divider |
| 1 | 47kΩ metal film resistor | Voltage divider |
| 1 | 100kΩ metal film resistor | Voltage divider |
| 9 | Kailh MX hot-swap sockets | For hot-swappable switches |
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 9 | SK6812MINI | miniled:MX_SK6812MINI-E_REV | D10, D11, D12, D13, D14, D15, D16, D17, D18 |
| 9 | SW_Push | mx:MX-Hotswap-1U | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9 |
| 1 | 100k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 47k | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW10 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
| 1 | ~ | OLED:SSD1306-0.91-OLED-4pin-128x32 | OLED1 |
The 32 most common of 36 parts.
Questions
How big is the Macropadv3 PCB?
It measures 67.2 × 84.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Macropadv3 use?
36 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 Macropadv3 KiCad files?
From the cubit010/Cubitpad repository on GitHub, at the commit this page was made from: the board is PCB/macropadv3.kicad_pcb and its schematic PCB/macropadv3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Macropadv3 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).
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