SomaCombo
About the SomaCombo PCB
SomaCombo is an open source RP2040/RP2350 PCB design by graysonarts, published on GitHub. It is a 4-layer board measuring 99.8 × 99.8 mm, with 27 components from 27 distinct parts.
Its main chip is the Pico-W Socket, from the RP2040/RP2350 family. Other key parts include the MCP23017_SP. By type, the board carries 6 connectors, 3 resistors, 1 IC 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 SomaCombo
SomaCombo bill of materials (BOM)
27 components, 27 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP23017_SP | DIP-28_W7.62mm | U1 |
| 1 | ~ | Pico-W Socket | M1 |
| 1 | 3.3V I2C IN | PinHeader_1x04_P1.27mm_Vertical | J1 |
| 1 | LED+ | TerminalBlock_Phoenix_MPT-0,5-8-2.54_1x08_P2.54mm_Horizontal | J2 |
| 1 | LED- | TerminalBlock_Xinya_XY308-2.54-16P_1x16_P2.54mm_Horizontal | J3 |
| 1 | LOW Level Shifter | PinHeader_1x04_P1.27mm_Vertical | J4 |
| 1 | HIGH Level Shifter | PinHeader_1x04_P1.27mm_Vertical | J5 |
| 1 | 5V IN | TerminalBlock_Phoenix_MPT-0,5-2-2.54_1x02_P2.54mm_Horizontal | J6 |
| 1 | B04 | PinHeader_1x03_P1.27mm_Vertical | G10 |
| 1 | B03 | PinHeader_1x03_P1.27mm_Vertical | G11 |
| 1 | B02 | PinHeader_1x03_P1.27mm_Vertical | G12 |
| 1 | B01 | PinHeader_1x03_P1.27mm_Vertical | G13 |
| 1 | C01 | PinHeader_1x03_P1.27mm_Vertical | G14 |
| 1 | C02 | PinHeader_1x03_P1.27mm_Vertical | G15 |
| 1 | C03 | PinHeader_1x03_P1.27mm_Vertical | G16 |
| 1 | C04 | PinHeader_1x03_P1.27mm_Vertical | G17 |
| 1 | C05 | PinHeader_1x03_P1.27mm_Vertical | G18 |
| 1 | C06 | PinHeader_1x03_P1.27mm_Vertical | G19 |
| 1 | C07 | PinHeader_1x03_P1.27mm_Vertical | G20 |
| 1 | C08 | PinHeader_1x03_P1.27mm_Vertical | G21 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | C09 | PinHeader_1x03_P1.27mm_Vertical | G22 |
| 1 | C10 | PinHeader_1x03_P1.27mm_Vertical | G26 |
| 1 | C11 | PinHeader_1x03_P1.27mm_Vertical | G27 |
| 1 | C12 | PinHeader_1x03_P1.27mm_Vertical | G28 |
| 1 | 4.7K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1 |
| 1 | 4.7K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R2 |
| 1 | 4.7K 1.5 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R3 |
SomaCombo design files
The KiCad project lives in the graysonarts/soma repository on GitHub; these links point at the commit this page was built from.
SomaCombo: common questions
What microcontroller does the SomaCombo use?
The SomaCombo is built around the Pico-W Socket, from the RP2040/RP2350 family.
How big is the SomaCombo PCB?
The SomaCombo measures 99.8 × 99.8 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the SomaCombo?
27 components, from 27 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 SomaCombo 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 SomaCombo 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 SomaCombo 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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