4 layers234 × 84 mm
Main panel
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
234 parts3kApache-2.0
2 layers77.7 × 96 mm
HackPad
LeonPalej/HackPadBuilding a HackPad with 8 buttons, and one upright and one sideways knob, also a display.
- Size
- 77.7 × 96 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 44
- Nets
- 36
- Pads
- 131
- Tracks, vias
- 355, 29
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 14 Oct 2026
- Updated
- 26 Oct 2026
Overview
HackPad is an open-source printed circuit board by LeonPalej, from the LeonPalej/HackPad repository on GitHub. It is a 2-layer board of 77.7 × 96 mm with 44 parts on 36 nets, routed with 355 tracks and 29 vias.
It is built around the SK6812MINI-E. Its parts include 17 diodes, 9 switches, 1 IC and 1 connector. It belongs with the lEDs and displays boards of this library.
Main components
1README
README.mdSleekPad
SleekPad is a simple and sleek stream deck type of micropad containing 9 buttons in total, 8 switches and 1 rotary switch, it also contains a horizontal knob compared to the usual vertical one, the design also contains programmable RGB and a programmable Display.
Features:
- Sleek case design on a 25 degree angle
- 128x32 OLED Display
- 8 SK6812 MINI-E LEDs
- 8 Switches
- 1 EC11E Rotary encoder (with switch!)
CAD Model:
The design is made up of 3 layers, the top, middle and bottom, they all join together with the PCB with 4 M3 Bolts screwing into heatset inserts, the board is on a 25 degree angle to mimic the stream deck designs.
Made in Fusion360.
PCB Model:
This is the pcb I designed, I have nothing much to say about it other than that its my first pcb and im proud of it.
Schematic:
PCB:
Made in KiCad.
Firmware:
I made the firmware with kmk, idk if it works because I need to get the materials to build this first and test it out , I plan to make the display, display time and have some functions that change its display depending on the buttons you press or probably go to QMK so i can make a custom app to control it.
BOM:
| Amount | Component / Description |
|---|---|
| 8x | MX-Style switches |
| 8x | White blank DSA keycaps |
| 9x | 1N4148 Diodes |
| 8x | SK6812 MINI-E LEDs |
| 1x | EC11 Rotary Encoder |
| 1x | Unsoldered Seeed XIAO RP2040 |
| 1x | 0.91 inch OLED display |
| 1x | PCB |
| 5x | M3x16mm SHCS Bolts |
| 4x | M3x5mmx4mm heatset inserts |
| 1x | Case Top |
| 1x | Case Middle |
| 1x | Case Bottom |
| 1x | Knob |
| 1x | hexagonal M3 DIN934 100/1 nut (I have) |
Parts
44| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | Conn_01x01_Pin | Connector_Wire:SolderWirePad_1x01_SMD_2x4mm | A1, A2, B1, B2, GND1, GND2, S1, S2, S3, S4 |
| 9 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8, D15 |
| 8 | SK6812MINI-E | LED_SMD:LED_SK6812MINI_PLCC4_3.5x3.5mm_P1.75mm | D9, D10, D11, D12, D13, D14, D16, D17 |
| 8 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 |
| 5 | , , , , | ||
| 1 | clipboard:ae92054a-8818-41de-ae40-8174f831cc78 | ||
| 1 | Conn_01x04_Pin | Connector_PinSocket_2.54mm:PinSocket_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 | SW10 |
Questions
How big is the HackPad PCB?
It measures 77.7 × 96 mm and has 2 copper layers, 1.6 mm thick.
What parts does the HackPad use?
44 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 LeonPalej/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 LeonPalej before reusing the design.
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