HardLabs

SomaButton

graysonarts·soma·hardware/SomaButton/SomaButton.kicad_pcb

SomaButton PCB layout, top view — open source RP2040/RP2350 board by graysonarts

About the SomaButton PCB

SomaButton is an open source RP2040/RP2350 PCB design by graysonarts, published on GitHub. It is a 2-layer board measuring 99.8 × 99.8 mm, with 18 components from 13 distinct parts.

Its main chip is the Pico-W Socket, from the RP2040/RP2350 family. Other key parts include the ULN2803A. By type, the board carries 7 connectors, 3 capacitors, 3 resistors, 2 ICs, 2 diodes and 1 module.

It belongs with the audio designs in this gallery.

From the project

Society's Obedience through Managed Audio

Main components on the SomaButton

ULN2803A

SomaButton bill of materials (BOM)

18 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
ULN2803A
U2, U3
1
~
M1
1
LED+
J1
1
LED GND
J2
1
BTN GND
J3
1
I2C
J4
1
V12
J5
1
Buttons
J6
1
V5
J7
2
D_Schottky
D1, D3
3
0.1uF
C1, C2, C3
2
4.7K
R1, R2
1
220
RN1

SomaButton design files

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

SomaButton: common questions

What microcontroller does the SomaButton use?

The SomaButton is built around the Pico-W Socket, from the RP2040/RP2350 family.

How big is the SomaButton PCB?

The SomaButton measures 99.8 × 99.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the SomaButton?

18 components, from 13 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 SomaButton design files?

From the graysonarts/soma 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 SomaButton design in my own project?

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

Can I test firmware for the SomaButton 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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