SomaMultiplex
About the SomaMultiplex PCB
SomaMultiplex is an open source Raspberry Pi PCB design by graysonarts, published on GitHub. It is a 2-layer board measuring 99.5 × 99.5 mm, with 14 components from 13 distinct parts.
Its main chip is the RaspberryPi_Pico_Common_THT, from the Raspberry Pi family. Other key parts include the DG406DJ. By type, the board carries 7 connectors, 4 resistors, 1 IC, 1 module and 1 capacitor.
It belongs with the audio designs in this gallery.
From the project
Society's Obedience through Managed Audio
Main components on the SomaMultiplex
SomaMultiplex bill of materials (BOM)
14 components, 13 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DG406DJ | DG407 | IC1 |
| 1 | ~ | RaspberryPi_Pico_Common_THT | M1 |
| 1 | Audio IN 1-8 | Altech_AK100_1x08_P5.00mm | J1 |
| 1 | AudioIN 9-16 | Altech_AK100_1x08_P5.00mm | J2 |
| 1 | AudioGND 1-8 | Altech_AK100_1x08_P5.00mm | J3 |
| 1 | AudioGND 9-16 | Altech_AK100_1x08_P5.00mm | J4 |
| 1 | AudioOUT | Altech_AK100_1x02_P5.00mm | J5 |
| 1 | I2C | JST_XH_S4B-XH-A-1_1x04_P2.50mm_Horizontal | J6 |
| 1 | VIN | JST_EH_B2B-EH-A_1x02_P2.50mm_Vertical | J7 |
| 1 | 0.1uF | C_1210_3225Metric | C1 |
| 1 | 50 | R_1210_3225Metric | R1 |
| 2 | 10K | R_1210_3225Metric | R2, R3 |
| 1 | 0 | R_1210_3225Metric | R4 |
SomaMultiplex design files
The KiCad project lives in the graysonarts/soma repository on GitHub; these links point at the commit this page was built from.
SomaMultiplex: common questions
What microcontroller does the SomaMultiplex use?
The SomaMultiplex is built around the RaspberryPi_Pico_Common_THT, from the Raspberry Pi family.
How big is the SomaMultiplex PCB?
The SomaMultiplex measures 99.5 × 99.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the SomaMultiplex?
14 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 SomaMultiplex 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 SomaMultiplex 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 SomaMultiplex without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.
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