MADPAD

MADPAD is my kinda printed pad inspired Hackpad version that looks pretty sweet and hopefully runs just as smooth as it looks (>_>)

Features

• Seeed XIAO RP2040 microcontroller
• 0.91" I2C OLED display
• 3x3 mechanical key layout
• Direct wiring for every key

Hackpad Overview

This shows the full assembly of MADPAD in Fusion 360.
It demonstrates how the PCB, case, and components fit together.

Schematic

The schematic was designed in KiCad.
Each switch connects directly to the RP2040.
The OLED follows GND, VCC, SCL, SDA pin order.

PCB Layout

The PCB was designed in KiCad PCB Editor.
It shows component placement and routing.
The layout focuses on clarity and simplicity.

Case Design

The case was designed in Free Cad .
Dimensions were taken directly from the PCB.
All parts were test-fit using 3D models.

Bill of Materials

Part	Quantity	Description
Mechanical key switches	9	MX-style
Keycaps	9	MX-compatible
Seeed XIAO RP2040	1	Microcontroller
OLED display (0.91")	1	I2C
PCB	1	Double-sided
Case	1	3D printed

Firmware Instructions

Flashing

1. Install CircuitPython .uf2.
2. Enter bootloader mode.
3. Copy the .uf2 to the board.

Libraries

1. Download CircuitPython library bundle.
2. Copy displayio, display_text, debouncer, and HID.
3. Upload code.py.
4. Test all inputs.

License

This project is open source under the MIT License.