HardLabs

Hackpad

reimunyancat·hackpad·PCB/hackpad.kicad_pcb

Hackpad PCB layout, top view — open source RP2040/RP2350 board by reimunyancat

About the Hackpad PCB

Hackpad is an open source RP2040/RP2350 PCB design by reimunyancat, published on GitHub. It is a 2-layer board measuring 57 × 78 mm, with 21 components from 5 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. By type, the board carries 10 switches, 9 diodes, 1 IC and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

A custom 9-key (3x3 matrix) macropad with a rotary encoder and a 1.3" OLED, built for the Hack Club Stardance Hackpad YSWS.

A custom 9-key (3x3 matrix) macropad with a rotary encoder and a 1.3" OLED, built for the Hack Club Stardance Hackpad YSWS.

- MCU: Seeed XIAO RP2040 - Layout: 3x3 switch matrix + 1 rotary encoder (EC11) + 1.3" 128x64 OLED (I2C) - Firmware: KMK (CircuitPython) - Case: Sandwich-style, fully 3D printed

KMK (CircuitPython). Flash CircuitPython to the XIAO, copy the kmk library folder onto the CIRCUITPY drive, then drop Firmware/main.py on it.

Hackpad, from the project README
From the project README

Main components on the Hackpad

XIAO-RP2040-DIP

Hackpad bill of materials (BOM)

21 components, 5 distinct parts.

QtyPartRefs
1
XIAO-RP2040-DIP
U1
1
Conn_01x04
J1
9
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +1
1
RotaryEncoder_Switch
SW10
9
D
D1, D2, D3, D4, D5, D6, D7, D8 +1

Hackpad design files

The KiCad project lives in the reimunyancat/hackpad repository on GitHub; these links point at the commit this page was built from.

Hackpad: common questions

What microcontroller does the Hackpad use?

The Hackpad is built around the XIAO-RP2040-DIP, from the RP2040/RP2350 family.

How big is the Hackpad PCB?

The Hackpad measures 57 × 78 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hackpad?

21 components, from 5 distinct parts. The full bill of materials is listed on this page.

Where can I download the Hackpad design files?

From the reimunyancat/hackpad repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Hackpad design in my own project?

The repository has no license, so all rights stay with reimunyancat. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Hackpad without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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