4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers62 × 57 mm
Hackpad
jamallyemin/hackpad-macropadvery kewl 3-key macropad made for hack club hackpad!
- Size
- 62 × 57 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 8
- Nets
- 15
- Pads
- 46
- Tracks, vias
- 67, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 23 Aug 2026
- Updated
- 25 Aug 2026
Overview
Hackpad is an open-source printed circuit board by jamallyemin, from the jamallyemin/hackpad-macropad repository on GitHub. It is a 2-layer board of 62 × 57 mm with 8 parts on 15 nets, routed with 67 tracks and 0 vias.
It is built around the WS2812B. Its parts include 4 switches, 1 IC, 1 diode and 1 connector.
Main components
1README
README.mdhackpad-macropad :3
very kewl 3-key macropad made for hack club hackpad!
it's a compact custom macropad featuring a rotary encoder, 0.91" OLED screen, WS2812B RGB LED, and a piezo buzzer for cool noises/audio feedback. everything is powered by the Seeed Studio XIAO RP2040 placed right at the top of the board!
pics !!
schematic
3d case
pcb layout
kicad pcb layout
features !!
- Seeed XIAO RP2040: mounted at the top of the PCB for clean USB-C access.
- 3x MX Switches: mechanical key switches for your daily macros/shortcuts.
- EC11 Rotary Encoder: smooth knob control for volume, scrolling, or custom bindings (with built-in push button!).
- 0.91" I2C OLED Display: 128x32 screen to show custom animations, status info, or graphics.
- WS2812B RGB LED: addressable Neopixel for custom lighting effects.
- Piezo Buzzer: self-supplied buzzer for playin chiptunes or audio feedback!
repo structure
/PCB- KiCad schematic (.kicad_sch), PCB layout (.kicad_pcb), and project files./CAD- 3D model STEP files (hackpad.step)./production- Gerber files (gerbers.zip), 3D printable STL files (Top.stl,Bottom.stl), and production code./images- Screenshots and 3D preview renders./Firmware- CircuitPython code (main.py).
CAD & case design
The enclosure consists of 2 custom 3D printed parts: Top.stl and Bottom.stl. Everything fits together neatly to protect the PCB and hold the mechanical switches firmly in place. Designed in CAD and exported to /CAD/hackpad.step.
PCB design
Designed using KiCad! The layout puts the XIAO RP2040 at the top edge of the board to allow seamless USB cable plugging without hitting the case walls. All footprints and traces are verified with zero DRC errors.
firmware overview
Runs using CircuitPython / MicroPython (main.py).
- Encoder controls audio/navigation.
- Switches trigger custom macros.
- OLED and RGB LED render real-time UI/feedback.
stuff used (BOM)
Here's everything needed to build this hackpad:
- 1x Seeed Studio XIAO RP2040
- 3x Mechanical MX Switches
- 1x EC11 Rotary Encoder
- 1x 0.91" 128x32 I2C OLED Display
- 1x WS2812B / Neopixel RGB LED
- 1x Piezo Buzzer (Self-supplied / extra part)
- 1x 3D Printed Top Case (
Top.stl) - 1x 3D Printed Bottom Case (
Bottom.stl)
Parts
8| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3 |
| 1 | Buzzer | Buzzer_Beeper:Buzzer_12x9.5RM7.6 | BZ1 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | 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 | SW4 |
| 1 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D1 |
Questions
How big is the Hackpad PCB?
It measures 62 × 57 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackpad use?
8 parts, built around the WS2812B. 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 jamallyemin/hackpad-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 jamallyemin before reusing the design.
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