HardLabs

3x3-PiPico-Macropad

MudhHash·3x3-PiPico-Macropad·PCB/MacroPadGithub.kicad_pcb

3x3-PiPico-Macropad PCB layout, top view — open source RP2040/RP2350 board by MudhHash

About the 3x3-PiPico-Macropad PCB

3x3-PiPico-Macropad is an open source RP2040/RP2350 PCB design by MudhHash, published on GitHub. It is a 2-layer board measuring 88.8 × 62.3 mm, with 19 components from 3 distinct parts.

Its main chip is the Raspberry_Pi_Pico, from the RP2040/RP2350 family. By type, the board carries 9 switches, 9 diodes and 1 IC.

It belongs with the keyboards designs in this gallery.

From the project

3x3 Macropad utilizing Raspberry Pi Pico, KMK firmware, CircuitPython, and a custom-made PCB.

Item | Quantity | Cost --- | --- | --- Macropad PCB | 1 | $0.40 (Excluding Shipping) Raspberry Pi Pico | 1 | $9.95 Mechanical Keyboard Switch | 10 | $4.89 PBT Blank Keycaps | 10 | $9.59

Files Included: .kicadpcb – Main PCB layout * .sch – Schematic design

How to Implement: Flash the CircuitPython .uf2 file for your board from circuitpython.org Drag-and-drop the firmware onto the mounted USB drive (CIRCUITPY) Install KMK by copying its files into the lib directory on the device Add or edit the code.py file to define your keymap and macros * Example Code:

3x3-PiPico-Macropad, from the project README
From the project README

Main components on the 3x3-PiPico-Macropad

Raspberry_Pi_Pico

3x3-PiPico-Macropad bill of materials (BOM)

19 components, 3 distinct parts.

QtyPartRefs
1
Raspberry_Pi_Pico
U1
9
Keyswitch
S1, S2, S3, S4, S5, S6, S7, S8 +1
9
Diode
D1, D2, D3, D4, D5, D6, D7, D8 +1

3x3-PiPico-Macropad design files

The KiCad project lives in the MudhHash/3x3-PiPico-Macropad repository on GitHub; these links point at the commit this page was built from.

3x3-PiPico-Macropad: common questions

What microcontroller does the 3x3-PiPico-Macropad use?

The 3x3-PiPico-Macropad is built around the Raspberry_Pi_Pico, from the RP2040/RP2350 family.

How big is the 3x3-PiPico-Macropad PCB?

The 3x3-PiPico-Macropad measures 88.8 × 62.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 3x3-PiPico-Macropad?

19 components, from 3 distinct parts. The full bill of materials is listed on this page.

Where can I download the 3x3-PiPico-Macropad design files?

From the MudhHash/3x3-PiPico-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 3x3-PiPico-Macropad design in my own project?

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

Can I test firmware for the 3x3-PiPico-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.

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