4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers85 × 80 mm
Hackpad
SupratikAthanti/WorkpadA 3x3 macropad made with the help of [Hack Club](https://hackclub.com/)'s [Hackpad](https://hackpad.hackclub.com) program.\ There are 8 keys that are backlit with LEDs, a rotary encoder, an OLED screen, and a XIAO RP2040 as the microcontroller.
- Size
- 85 × 80 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 32
- Pads
- 133
- Tracks, vias
- 144, 12
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 24 Dec 2025
- Updated
- 25 Dec 2025
Overview
Hackpad is an open-source printed circuit board by SupratikAthanti, from the SupratikAthanti/Workpad repository on GitHub, published under the MIT licence. It is a 2-layer board of 85 × 80 mm with 29 parts on 32 nets, routed with 144 tracks and 12 vias.
It is built around the SK6812MINI-E. Its parts include 18 diodes, 9 switches and 1 connector. It belongs with the keyboards and input and lEDs and displays boards and the RP2040 boards of this library.
Main components
1README
README.mdThe WorkPad
A 3x3 macropad made with the help of Hack Club's Hackpad program.
The device features 8 backlit keys, a rotary encoder, an OLED screen, and an XIAO RP2040 as its microcontroller.
Schematic
PCB
Case
The case is assembled using four M3 bolts and four M3 heat-set inserts. The case is made of three separate printed pieces.
Firmware
This macropad uses QMK for firmware.
- Rotary encoder knob adjusts the volume.
- By default, each key is bound to type out a number. The keys can type out the numbers 1 through 9. (There aren't enough keys to type out the number 0)
- This macropad is compatible with VIA, so that it can actually macro.
- The OLED screen should play the animation below at all times
- Still playing with the idea of displaying useful information.
Bill of Materials (BOM)
Physical materials needed to make this macropad:
- 8x Cherry MX Switches
- 8x DSA Keycaps
- 1x EC11 Rotary Encoder
- 9x Through-hole 1N4148 Diodes
- 9x SK6812 MINI LEDs
- 4x M3x16mm Screws
- 4x M3x5mx4mm Heatset Inserts
- 1x 0.91" OLED Display
- 1x Seeed Studio XIAO RP2040
- 1x 3D printed knob for the rotary encoder
- 1x 3D printed case (3 separate pieces)
Copyright
Copyright (C) 2025 Supratik
This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with this file, You can obtain one at https://mozilla.org/MPL/2.0/.
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D11 |
| 9 | SK6812MINI | 3D_Model_Footprints:LED_SK6812MINI | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8, LED9 |
| 8 | SW_Push | 3D_Model_Footprints:SW_Cherry_MX_1.00ul | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 |
| 1 | OLED Connection | 3D_Model_Footprints:0.91-OLED-4pin | J1 |
| 1 | RotaryEncoder_Switch | 3D_Model_Footprints:RotaryEncoder_Alps_EC11E-Switch | SW11 |
| 1 | XIAO-RP2040-DIP | 3D_Model_Footprints:XIAO-RP2040-DIP_3D_Model | XIAO-RP2040 HERE1 |
Questions
How big is the Hackpad PCB?
It measures 85 × 80 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackpad use?
29 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 SupratikAthanti/Workpad 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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