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KiCAD project

samanbeer·macropad_stasis·KiCAD_project/KiCAD_project.kicad_pcb

KiCAD project PCB layout, top view — open source RP2040/RP2350 board by samanbeer
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About the KiCAD project PCB

KiCAD project is an open source RP2040/RP2350 PCB design by samanbeer, published on GitHub. It is a 2-layer board measuring 78.4 × 86.3 mm, with 34 components from 7 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. Other key parts include the 74AHCT125. By type, the board carries 16 diodes, 10 switches, 6 capacitors and 2 ICs.

It belongs with the keyboards designs in this gallery.

From the project

This is custom 3×3 macropad PCB built with KiCad. It runs with Seeed Studio XIAO RP2040 microcontroller, uses Cherry MX switches and t has RGB lights with SK6812 MINI-E LEDs.

This is custom 3×3 macropad PCB built with KiCad. It runs with Seeed Studio XIAO RP2040 microcontroller, uses Cherry MX switches and t has RGB lights with SK6812 MINI-E LEDs.

I have done PCB design before, but I wanted to do something more hard like adding MCU, RGB LEDs, and a matrix connection. I learned key matrix wiring with diodes, level-shifting logic with the 74AHCT125 processor, PCB routing around an MCU and KiCad in general. Also I learned a lot from MarkDown syntax. I will use this for switching apps, custom scripts in some apps like VsCode for pushing new code to github etc... The…

KiCAD project, from the project README
From the project README

Main components on the KiCAD project

XIAO-RP2040-DIP74AHCT125

KiCAD project bill of materials (BOM)

34 components, 7 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
XIAO-RP2040-DIP
U1
1
74AHCT125
U2
9
SW_Push
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +1
1
RotaryEncoder_Switch
SW10
6
SK6812MINI-E
D1, D2, D3, D4, D5, D6
10
1N4148
D11, D12, D13, D14, D15, D16, D17, D18 +2
6
100nF
C1, C2, C3, C4, C5, C6

KiCAD project design files

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

KiCAD project: common questions

What microcontroller does the KiCAD project use?

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

How big is the KiCAD project PCB?

The KiCAD project measures 78.4 × 86.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the KiCAD project?

34 components, from 7 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 KiCAD project design files?

From the samanbeer/macropad_stasis 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 KiCAD project design in my own project?

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

Can I test firmware for the KiCAD project 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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