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 × 68.5 mm
Hackpad
Tufffed/HackpadMy hackpad
- Size
- 83 × 68.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 31
- Pads
- 109
- Tracks, vias
- 351, 46
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 18 May 2026
- Updated
- 25 May 2026
Overview
Hackpad is an open-source printed circuit board by Tufffed, from the Tufffed/Hackpad repository on GitHub. It is a 2-layer board of 83 × 68.5 mm with 28 parts on 31 nets, routed with 351 tracks and 46 vias.
It is built around the SK6812MINI-E. Its parts include 17 diodes, 6 switches, 1 IC and 1 connector.
Main components
1README
README.mdTuffed's Macropad
This has 5 MX keys with an additional Rotary Encoder, an OLED display, and RGB.
CAD
The case it built with 4 M3 screws and 4 matching HeatPress inserts. The case consits of a bottom shell and a top lid. The PCB is held in place as it's screwed with another 3 M3 screws with the same heat press inserts to match.
Made in Onshape
PCB
Schematic
PCB Layout
Made in KICad
Case
Made in Onshape
Firmware
For this hackpad, I used QMK to controll it. At the current moment it has a single layer with copy, paste, cut, volume, and mute controlls. As I use the hakpad with more programs I will add more layers depending on my needs (the rotary encoder push switch will be used to toggle).
Bill of Materials
| Item | Amt |
|---|---|
| PCB | 1x |
| Case (top and bottom) | 1x |
| Seed XIAO RP2040 | 1x |
| SK+912 MINI-E LED | 11x |
| EC11 Rotary Encoder | 1x |
| MX Switch | 2x |
| 1N4148 Diode | 6x |
| .91 in OLED Display | 1x |
| MX compaitble keycaps | 5x |
| M3x16mm Screw | 7x |
| M3x5mx4mm Heatpress inserts | 4x |
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | SK6812MINI-E | footprints:SK6812MINI-E_fixed | D7, D8, D9, D10, D11, D12, D13, D14, D15, D16, D17 |
| 6 | D | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6 |
| 5 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5 |
| 1 | Conn_01x04_Pin | footprints:SSD1306-0.91-OLED-4pin-128x32 | J1 |
| 1 | MOUDLE-SEEEDUINO-XIAO | footprints:XIAO-Generic-Hybrid-14P-2.54-21X17.8MM | U1 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW6 |
The 25 most common of 28 parts.
Questions
How big is the Hackpad PCB?
It measures 83 × 68.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackpad use?
28 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 Hackpad KiCad files?
From the Tufffed/Hackpad repository on GitHub, at the commit this page was made from: the board is PCB/Hackpad.kicad_pcb and its schematic PCB/Hackpad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Hackpad design in my own project?
Its repository states no licence, so its author keeps all rights: ask Tufffed 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
