MacroPad

premvy·MacroPad·PCB/hackpad_pv.kicad_pcb

About the MacroPad PCB

MacroPad is an open source RP2040/RP2350 PCB design by premvy, published on GitHub under the MIT license. It is a 2-layer board measuring 3.6 × 3.3 mm, with 38 components from 5 distinct parts.

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

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

From the project

RP2040-powered 12-key Macropad | Kicad | Python | Solidworks |

A custom 12-key macropad with per-key RGB lighting and an OLED display, powered by the Seeed XIAO RP2040. Designed with KiCad, SolidWorks, and Python.

- 1x Seeed XIAO RP2040 - 12x Mechanical Switches - 12x 1N4148 Diodes - 12x SK6812 MINI-E RGB LEDs - 1x 0.91" OLED Display (I2C) - 1x Custom 3D Printed Case

The electrical blueprint detailing the RP2040 pinout, the 3x4 diode matrix logic, and I2C bus wiring for the peripherals.

MacroPad, from the project README — From the project README

Main components on the MacroPad

XIAO-RP2040-DIP

MacroPad bill of materials (BOM)

38 components, 5 distinct parts.

Qty	Part	Footprint	Refs
1	XIAO-RP2040-DIP	XIAO-RP2040-DIP	U2
1	OLED	Adafruit_SSD1306	OL1
12	SW_Push	SW_Cherry_MX_1.00u_PCB	SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +4
12	SK6812MINI-E	LED_6028R	LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +4
12	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2, D3, D4, D5, D6, D7, D8 +4

MacroPad design files

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

LayoutPCB/hackpad_pv.kicad_pcb
SchematicPCB/hackpad_pv.kicad_sch

MacroPad: common questions

What microcontroller does the MacroPad use?

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

How big is the MacroPad PCB?

The MacroPad measures 3.6 × 3.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MacroPad?

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

Where can I download the MacroPad design files?

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

Can I use the MacroPad design in my own project?

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

Can I test firmware for the MacroPad 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.