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Pico 2HP Audio

rheslip·2HPico-Eurorack-Module-Hardware·2HPico DSP KiCad Design Files/Pico 2HP_Audio/Pico 2HP_Audio.kicad_pcb

Pico 2HP Audio PCB layout, top view — open source RP2040/RP2350 board by rheslip
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About the Pico 2HP Audio PCB

Pico 2HP Audio is an open source RP2040/RP2350 PCB design by rheslip, published on GitHub. It is a 2-layer board measuring 70 × 30.3 mm, with 57 components from 30 distinct parts.

Its main chip is the RP2350-WAVESHARE, from the RP2040/RP2350 family. Other key parts include the 74LVC1G3157, AMS1117-5.0, LM4040DBZ-10, TL072 and PCM5102A. By type, the board carries 24 capacitors, 15 resistors, 8 ICs, 4 connectors, 2 diodes and 2 inductors.

It belongs with the audio designs in this gallery.

From the project

2HP Eurorack module based on Raspberry Pi Pico 2

Feb 16/2026 - changed R1 to 47 ohms because 2HPico DSP consumes almost twice as much power as the 2HPico changed R10 and R17 to 10k to reduce output amp gains - was getting some clipping at times.

The DSP version uses the same front panel board as the 2HPico but replaces the PT8211 DAC with a PCM5102A audio DAC and adds a PCM1808 audio ADC. This version is intended to be used for audio processing.

Main components on the Pico 2HP Audio

74LVC1G3157AMS1117-5.0LM4040DBZ-10TL072PCM5102AMCP6002PCM1808PWR

Pico 2HP Audio bill of materials (BOM)

57 components, 30 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
74LVC1G3157
U1, U2
1
AMS1117-5.0
U3
1
LM4040DBZ-10
U4
1
TL072
U5
1
PCM5102A
U6
1
MCP6002
MCP6022
U7
1
PCM1808PWR
U8
3
CONN_01X04_PIN
Conn_01x04_Pin
J1, J2, J3
1
Conn_01x05_Pin
J4
1
DC INPUT
JP2
1
RP2350-WAVESHARE
RP2350-WaveShare
RZ1
2
1N5819WS
D1, D2
2
33UH
33uH
L1, L2
7
10u
C1, C2, C6, C8, C10, C19, C20
1
22u
C3
10
.1u
C4, C7, C9, C12, C13, C14, C15, C16 +2
2
18P
18p
C5, C17
2
1u
C11, C18
2
2.2U
2.2u
C21, C22
1
47R
100R
R1
Show 10 more
QtyPartRefs
1
2.2K
2.2k
R2
1
33R
33
R3
1
20K
20k
R4
1
47K
47k
R5
2
100K
100k
R6, R8
1
120K
120k
R7
1
180K
180k
R9
2
10K
5.6k
R10, R17
2
39K
39k
R11, R15
2
1k
R12, R19

Pico 2HP Audio design files

The KiCad project lives in the rheslip/2HPico-Eurorack-Module-Hardware repository on GitHub; these links point at the commit this page was built from.

Pico 2HP Audio: common questions

What microcontroller does the Pico 2HP Audio use?

The Pico 2HP Audio is built around the RP2350-WAVESHARE, from the RP2040/RP2350 family.

How big is the Pico 2HP Audio PCB?

The Pico 2HP Audio measures 70 × 30.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pico 2HP Audio?

57 components, from 30 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 Pico 2HP Audio design files?

From the rheslip/2HPico-Eurorack-Module-Hardware 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 Pico 2HP Audio design in my own project?

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

Can I test firmware for the Pico 2HP Audio 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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