HackPad

poojithas956·HackPad·PCB/HackPad.kicad_pcb

About the HackPad PCB

HackPad is an open source RP2040/RP2350 PCB design by poojithas956, published on GitHub under the MIT license. It is a 2-layer board measuring 101.7 × 66.7 mm, with 26 components from 4 distinct parts.

Its main chip is the RP2040-ZERO, from the RP2040/RP2350 family. By type, the board carries 12 switches, 12 diodes, 1 IC and 1 connector.

It belongs with the keyboards designs in this gallery.

From the project

A custom mini keyboard or macro board, where every physical key is fully programmable to launch apps, trigger shortcuts, control media, or run multi-step automated commands with a single press of a button.

A 12-key macropad I built as my second hardware project for Stasis, designed to pair with my 60% keyboard for editing, shortcuts, media control, etc...

Hi there, this is my fully custom keypad from scratch, and I tried to keep it clean, practical, and actually buildable.

- Project: 3x4 macropad + rotary encoder - MCU: RP2040 Zero - Switches: 12x MX-style - Extra input: 1x EC11 rotary encoder with push switch - Matrix: 3 rows x 4 columns - PCB size target: about 100mm x 65mm - Case workflow: KiCad PCB export -> Onshape assembly -> custom bottom case + plate

HackPad, from the project README — From the project README

Main components on the HackPad

RP2040-ZERO

HackPad bill of materials (BOM)

26 components, 4 distinct parts.

Qty	Part	Footprint	Refs
1	RP2040-ZERO	MODULE_RP2040-ZERO	U1
1	Conn_01x04_Pin	PinHeader_1x04_P2.54mm_Horizontal	J1
12	SW_Push_45deg	SW_MX_HS_KS-2P02B01-01_1u	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +4
12	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8 +4

HackPad design files

The KiCad project lives in the poojithas956/HackPad repository on GitHub; these links point at the commit this page was built from.

LayoutPCB/HackPad.kicad_pcb
SchematicPCB/HackPad.kicad_sch

HackPad: common questions

What microcontroller does the HackPad use?

The HackPad is built around the RP2040-ZERO, from the RP2040/RP2350 family.

How big is the HackPad PCB?

The HackPad measures 101.7 × 66.7 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the HackPad?

26 components, from 4 distinct parts. The full bill of materials is listed on this page.

Where can I download the HackPad design files?

From the poojithas956/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?

Yes, under the terms of its MIT license, which poojithas956 chose for the repository.

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.