Hackpad

ArseniyCherednichenko·Hackpad·PCB/Hackpad.kicad_pcb

About the Hackpad PCB

Hackpad is an open source RP2040/RP2350 PCB design by ArseniyCherednichenko, published on GitHub. It is a 2-layer board measuring 67.2 × 84.7 mm, with 30 components from 6 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. By type, the board carries 18 diodes, 10 switches, 1 IC and 1 LED.

It belongs with the displays & leds designs in this gallery.

From the project

My Hackpad is a 3×3 macro keypad, which can be programmed to address all needs. It runs on a Seeed XIAO RP2040, and features Cherry MX mechanical switches, SK6812 RGB LEDs, a rotary encoder, and an OLED status display.

I wanted to have a custom keypad on my desk and use shortcuts assigned to each key to simplify and make my workflow more efficient.

To use Hackpad, order the PCB using gerbers.zip from JLCPCB, print the 3D enclosure, solder the components, install firmware and assemble everything. Edit main.py to customise your keymap.

Hackpad, from the project README — From the project README

Main components on the Hackpad

XIAO-RP2040-DIP

Hackpad bill of materials (BOM)

30 components, 6 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	XIAO-RP2040-DIP	XIAO-RP2040-DIP	U1
9	SW_Push	MX-Hotswap-1U	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +1
1	RotaryEncoder_Switch	RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm	SW10
1	~	SSD1306-0.91-OLED-4pin-128x32	OLED1
9	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8 +1
9	SK6812MINI	MX_SK6812MINI-E_REV	D10, D11, D12, D13, D14, D15, D16, D17 +1

Hackpad design files

The KiCad project lives in the ArseniyCherednichenko/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 67.2 × 84.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Hackpad?

30 components, from 6 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Hackpad design files?

From the ArseniyCherednichenko/Hackpad repository on GitHub, which has the KiCad layout, the schematic and the BOM; 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 ArseniyCherednichenko. 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.