2 layers299 × 82.5 mm
PixelWave
hackclub/OnBoard
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663 parts915
2 layers89.1 × 67.4 mm
Hackpad
TAB1540/TAB1540multipadAbout TAB1540multipad is a 9 key macropad with a rotary encoder, an OLED Display. It also has 4 WS2812B Leds, and uses KMK firmware.
- Size
- 89.1 × 67.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 29
- Pads
- 119
- Tracks, vias
- 225, 15
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 26 Jul 2025
- Updated
- 26 Jul 2025
Overview
Hackpad is an open-source printed circuit board by TAB1540, from the TAB1540/TAB1540multipad repository on GitHub, published under the MIT licence. It is a 2-layer board of 89.1 × 67.4 mm with 26 parts on 29 nets, routed with 225 tracks and 15 vias.
It is built around the SK6812. Its parts include 13 diodes, 10 switches and 1 IC. It belongs with the keyboards and input and lEDs and displays boards and the RP2040 boards of this library.
Main components
1README
README.mdTAB1540multipad
TAB1540multipad is a 9 key macropad with 1 rotary encoder, an OLED Display. It also has 4 WS2812B Leds, and uses KMK firmware.
Features
- Basic abs 3d printable case
- 128x32 OLED Display
- 1 EC11 Rotary encoder for spinning around
- 4 WS2812B RGB LEDs.
- 9 keys
CAD demo
Everything fits together using 4 M3 Bolts. Case is made from 2 parts.
Designed using freeCAD 1.0.1 (first time for me)
PCB
This is my PCB, which was made in KiCad.
PCB
Schematic
Firmware Overview
This hackpad uses KMK firmware for maybe everything
- The rotary encoder changes volume. press do nothing
- The 9 keys is just keys
- The OLED is something I forgor
BOM:
Here should be everything you need to make this hackpad
- 9x Cherry MX Switches
- 9x DSA Keycaps
- 4x M3x16mm SHCS Bolts
- 9x 1N4148 DO-35 Diodes.
- 4x WS2812B LEDs
- 1x 0.91" 128x32 OLED Display
- 1x EC11 Rotary Encoder
- 1x XIAO RP2040
- 1x Case (2 printed parts)
Extra
This is another version of this project
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 1N4148 | 1N4148.zip:DIOAD753W49L380D172B | 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 |
| 3 | SK6812 | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D12, D13, D14 |
| 1 | 1 | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D11 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW10 |
| 1 | TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | TestPoint:TestPoint_Loop_D1.80mm_Drill1.0mm_Beaded | 5v test point |
| 1 | XIAO-RP2040-DIP | OPL_KiCAD_Lib:XIAO-RP2040-DIP | U1 |
The 25 most common of 26 parts.
Questions
How big is the Hackpad PCB?
It measures 89.1 × 67.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackpad use?
26 parts, built around the SK6812. 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 TAB1540/TAB1540multipad 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 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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