2 layers60 × 30 mm
Controller
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
11 parts3kApache-2.0
2 layers65 × 82 mm
Macropad
lava-developer/Custom-MacropadA macropad made by me for personal use.
- Size
- 65 × 82 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 14
- Pads
- 77
- Tracks, vias
- 114, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Dec 2025
- Updated
- 11 May 2026
Overview
Macropad is an open-source printed circuit board by lava-developer, from the lava-developer/Custom-Macropad repository on GitHub. It is a 2-layer board of 65 × 82 mm with 11 parts on 14 nets, routed with 114 tracks and 0 vias.
Its parts include 9 switches, 1 IC and 1 diode. It belongs with the keyboards and input boards and the RP2040 boards of this library.
README
README.mdCustom-Macropad
A macropad made by me for personal use
| Case | Case - Assembled |
|---|---|
 |  |
| Schematic | PCB | PCB - 3D Render |
|---|---|---|
 |  |  |
Why?
My keyboard doesn't have a numpad and I needed more keys for 3D modelling, programming and designing.
Features
The macropad features 9 programmable keys and a programmable 128x32 OLED display. It runs on the Seeed Studio XIAO RP2040 microcontroller.
Firmware
The current firmware in the main.py file makes the thing a simple 1-9 numpad but it is easily changeable to serve desired purposes.
Challenges
For this project I needed to learn KiCad and PCB design, as well as get better at python.
Specifications
BOM:
-
1x Seeed Studio XIAO RP2040
-
9x Cherry MX Switches
-
9x Blank DSA Keycaps
-
1x SSD1306 0.91" OLED Display
-
4x M3 Heatset Insert
-
4x M3x16 Bolt
Other:
-
Custom PCB
-
3D-printed case: Bottom Case, Top Case
-
KMK software
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9 |
| 1 | SSD1306-OLED-DISP | Display:SSD1306-0.91-OLED-4pin-128x32 | D1 |
| 1 | XIAO-RP2040-DIP | Seeed Studio XIAO Series Library:XIAO-RP2040-DIP | U1 |
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Questions
How big is the Macropad PCB?
It measures 65 × 82 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Macropad use?
11 parts. 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 Macropad KiCad files?
From the lava-developer/Custom-Macropad repository on GitHub, at the commit this page was made from: the board is PCB/macropad.kicad_pcb and its schematic PCB/OPL_Kicad_Library/Grove Vision AI V2 Library/Grove - Vision AI Module V2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Macropad design in my own project?
Its repository states no licence, so its author keeps all rights: ask lava-developer before reusing the design.