4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers78.2 × 84.7 mm
Hackpad
solswiss/merce-macropad- Size
- 78.2 × 84.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 34
- Nets
- 35
- Pads
- 137
- Tracks, vias
- 247, 7
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 28 Jun 2025
- Updated
- 7 Jul 2025
Overview
Hackpad is an open-source printed circuit board by solswiss, from the solswiss/merce-macropad repository on GitHub. It is a 2-layer board of 78.2 × 84.7 mm with 34 parts on 35 nets, routed with 247 tracks and 7 vias.
It is built around the SK6812MINI-E. Its parts include 18 diodes, 9 switches, 1 resistor, 1 IC and 1 connector. It belongs with the RP2040 boards of this library.
Main components
1README
README.mdmerce-macropad
A minimal 9-key macropad with an OLED display and RGB backlighting. The result of my first venture into keebs!....... The product of sleepless nights...
BOM
| part | # |
|---|---|
| Seeed XIAO RP2040 | 1 |
| Through-hole 1N4148 Diodes | 9 |
| MX-Style switches | 9 |
| 0.91 inch OLED displays | 1 |
| Blank DSA keycaps | 9 |
| SK6812 MINI-E LEDs | 9 |
| 500ohm resistors* | 1 |
| M3x16mm screws | 4 |
| M3x5mx4mm heatset inserts | 4 |
*can supply personally
Gallery
Parts
34| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | D_Small | MX:Diode_DO-35 | D10, D11, D12, D13, D14, D15, D16, D17, D18 |
| 9 | SK6812MINI | MX:yta-SK6812MINI-E | D1, D2, D3, D4, D5, D6, D7, D8, D9 |
| 9 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8, SW9 |
| 1 | 100 | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Vertical | R1 |
| 1 | Conn_01x04_Pin | OLED:SSD1306-0.91-OLED-4pin-128x32 | J2 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
The 30 most common of 34 parts.
Questions
How big is the Hackpad PCB?
It measures 78.2 × 84.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackpad use?
34 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 solswiss/merce-macropad 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 solswiss before reusing the design.
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