4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers92.2 × 88 mm
Hackclub micropad
calebnelson712-dot/hack-padmy new hack pad for the blueprint project.
- Size
- 92.2 × 88 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 38
- Nets
- 36
- Pads
- 164
- Tracks, vias
- 292, 60
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 9 Jan 2026
- Updated
- 9 Jan 2026
Overview
Hackclub micropad is an open-source printed circuit board by calebnelson712-dot, from the calebnelson712-dot/hack-pad repository on GitHub. It is a 2-layer board of 92.2 × 88 mm with 38 parts on 36 nets, routed with 292 tracks and 60 vias.
It is built around the SK6812MINI-E. Its parts include 21 diodes, 12 switches, 3 resistors, 1 IC and 1 connector. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdmicropad!
This is a 12-key hack-pad with an OLED display and LEDs underneath the keys! I plan on using this as a numberpad, with extra keys (calculator, gamebar).
Schematic and PCB!
These were made in KiCad. There are two layers in this PCB. The top serves as the signal plane while the bottom serves as the ground plane.
CAD
Here is the assembled piece within AutoDesk Fusion 360! I was unable to find 3D models for the LEDs. The microcontroller also wouldn't export to Fusion360. Below I attached the KiCad PCB model and the Fusion360 model.Parts Used
| Quantity | Item |
|---|---|
| 1 | XIAO RP2040 |
| 1 | 3D printed case: base |
| 1 | 3D printed case: cap |
| 9 | SK6812MINI LEDs |
| 12 | Cherry MX Switches |
| 12 | DSA Keycaps |
| 1 | 0.91" 128x32 OLED Display |
Parts
38| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12 |
| 12 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12 |
| 9 | SK6812MINI | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D13, D14, D15, D16, D17, D18, D19, D20, D21 |
| 2 | 4k7 | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R1, R2 |
| 1 | 300 | Resistor_SMD:R_0201_0603Metric_Pad0.64x0.40mm_HandSolder | R3 |
| 1 | OLED_DISPLAY | OLED:SSD1306-0.91-OLED-4pin-128x32 | J2 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
Questions
How big is the Hackclub micropad PCB?
It measures 92.2 × 88 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackclub micropad use?
38 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 Hackclub micropad KiCad files?
From the calebnelson712-dot/hack-pad repository on GitHub, at the commit this page was made from: the board is PCB/hackclub_micropad.kicad_pcb and its schematic PCB/hackclub_micropad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hackclub micropad design in my own project?
Its repository states no licence, so its author keeps all rights: ask calebnelson712-dot before reusing the design.
Similar boards
- 4 layers180.8 × 300.3 mm
Dilemma
Bastardkb/Dilemma
The Dilemma is a vertical stagger low-profile keyboard with mods.
383 parts590 - 4 layers48 × 32 mm
FlatSat
Pwnsat/FlatSat
Flatsat v1.0 is a hardware based platform for aerospace cybersecurity research
106 parts575GPL-2.0 - 2 layers
Demo
adamws/kicad-kbplacer
KiCad plugin for automatic keyboard's key placement and routing
48 parts547GPL-3.0 - 2 layers97 × 78.5 mm
Dumbpad
imchipwood/dumbpad
Simple 4x4 numpad with rotary encoder. Powered by QMK via ATmega32u4 Pro Micro
62 parts517GPL-2.0 - 4 layers82.5 × 39.4 mm
V4head
makerforgetech/modular-biped
An open source framework for creating a bipedal modular companion robot.
26 parts493GPL-3.0 - 2 layers115.7 × 95.7 mm
- 4 layers70 × 54 mm
