2 layers57 × 55.2 mm
LogicAnalyzer
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
10 parts5.1kGPL-3.0
2 layers71.4 × 85.7 mm
Hackpad
AM1NOM/ControlaControla is a compact, tactile controller that brings your most-used shortcuts and actions within reach.
- Size
- 71.4 × 85.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 14
- Pads
- 74
- Tracks, vias
- 74, 0
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 14 Dec 2025
- Updated
- 24 Mar 2026
Overview
Hackpad is an open-source printed circuit board by AM1NOM, from the AM1NOM/Controla repository on GitHub, published under the MIT licence. It is a 2-layer board of 71.4 × 85.7 mm with 10 parts on 14 nets, routed with 74 tracks and 0 vias.
Its parts include 8 switches and 1 IC. It belongs with the RP2040 boards of this library.
README
README.mdCONTROLA
Controla is a compact, tactile controller that brings your most-used shortcuts and actions within reach. It pairs responsive physical controls with a crisp OLED for clear status and feedback, so you always know what layer or mode you’re in. Perfect for switching tools, controlling media, or speeding up repetitive tasks, Controla fits neatly beside your keyboard and adapts to your workflow.
Features
- RP2040-based Seeed XIAO module
- 0.91" SSD1306 I2C OLED display
- Rotary encoder with push
- 7x MX-style mechanical switches with per-key RGB (SK6812 MINI-E)
- Custom PCB and 3D printed case
Screenshots
-
Schematic:
-
PCB:
-
CAD:
Bill of Materials (BOM)
| Ref | Qty | Part | Description |
|---|---|---|---|
| U1 | 1 | Seeed XIAO RP2040 (SMD) | RP2040 MCU module, SMD mount |
| OLED1 | 1 | 0.91" OLED SSD1306 I2C | Pin order GND-VCC-SCL-SDA |
| ENC1 | 1 | EC11 Rotary Encoder w/ push | Volume / scroll encoder |
| KNOB1 | 1 | Encoder knob | Fits EC11 shaft |
| SW1-SW7 | 7 | MX-style mechanical switches | Keyboard switches |
| KEYCAPS | 7 | Blank DSA keycaps (white) | For MX switches |
| LED1-LED7 | 7 | SK6812 MINI-E RGB LEDs | Per-key RGB lighting |
| D1-D7 | 7 | 1N4148 diodes (TH) | Optional, for key matrix |
| PCB1 | 1 | Custom PCB | Macropad PCB |
| M3x16 | 4 | M3 x 16mm screws | Case mounting |
| HEATSET | 4 | M3 heatset inserts | For 3D printed case |
| CASE | 1 | 3D printed case | No acrylic |
| SOLDER_IRON | 1 | Soldering iron | Required for assembly |
| SOLDER | 1 | Solder wire 0.5mm | For TH + SMD |
| FLUX | 1 | Flux pen | Recommended for SMD |
For the complete, raw BOM file see BOM.csv.
Assembly
- Solder the Seeed XIAO to the PCB (SMD pad/module) or mount per module instructions.
- Solder the OLED to the I2C pads (GND, VCC, SCL, SDA).
- Place and solder mechanical switches and diodes (if used) in the key matrix.
- Solder SK6812 LEDs and route their data line according to PCB silkscreen.
- Mount the rotary encoder and knob; secure with nuts if required.
- Install M3 heatset inserts in the 3D-printed case, secure PCB with M3x16 screws.
Firmware
Firmware and microcontroller code are in Firmware/main.py.
Other files
- PCB and schematic files: PCB/hackpad.kicad_pcb
- PCB project files and library:
PCB/folder - 3D models for case:
CAD/folder
License
This project is open-source.
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6, SW7 |
| 1 | OLED | OLEDS:OLED | OL1 |
| 1 | RotaryEncoder | Rotary_Encoder:RotaryEncoder_Alps_EC11E_Vertical_H20mm | SW9 |
| 1 | XIAO-RP2040-DIP | OPL:XIAO-RP2040-DIP | U1 |
Questions
How big is the Hackpad PCB?
It measures 71.4 × 85.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Hackpad use?
10 parts. 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 AM1NOM/Controla repository on GitHub, at the commit this page was made from: the board is PCB/hackpad.kicad_pcb and its schematic PCB/OPL_Kicad_Library-master/Grove Vision AI V2 Library/Grove - Vision AI Module V2.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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