HardLabs

Pico midi2cv

peterzimon·pico-midi2cv·schematics/pico-midi2cv.kicad_pcb

Pico midi2cv PCB layout, top view — open source RP2040/RP2350 board by peterzimon

About the Pico midi2cv PCB

Pico midi2cv is an open source RP2040/RP2350 PCB design by peterzimon, published on GitHub. It is a 2-layer board measuring 75 × 100 mm, with 37 components from 33 distinct parts.

Its main chip is the 10u, from the RP2040/RP2350 family. Other key parts include the LM7805_TO220, LM358, MCP4822 and 6N138. By type, the board carries 11 resistors, 6 connectors, 6 capacitors, 4 ICs and 2 diodes.

It belongs with the audio designs in this gallery.

From the project

Midi to CV converter using Raspberry Pi Pico

Alternatively you can set git config submodule.recurse true or git config --global submodule.recurse true.

Pico midi2cv, from the project README
From the project README

Main components on the Pico midi2cv

LM7805_TO220LM358MCP48226N138

Pico midi2cv bill of materials (BOM)

37 components, 33 distinct parts.

QtyPartRefs
1
LM7805_TO220
U1
1
LM358
U2
1
MCP4822
U3
1
6N138
U4
1
Jack-DC (12-32V)
J1
1
Conn_01x20_Male
J2
1
Power 1
J3
1
Power 2
J4
1
Power to MCU
J5
1
MIDI Keyboard Power
J6
1
LED
D_GATE_LED1
1
CV Out
J_CV1
1
Gate Out
J_GATE1
1
MIDI In
J_MIDI_IN1
1
UART Programming
J_SWD_IO1
1
2N3904
Q_GATE_LED1
1
SW_DIP_x04
SW_MIDI_CHANNEL1
1
Pico
U_PICO1
1
1N4148
D1
1
1N4001
D2
Show 13 more
QtyPartRefs
1
10u
C1
1
330n
C2
2
100n
C3, C4
2
22p
C5, C6
1
47k
R1
1
68k
R2
2
1k
R3, R8
2
220
R4, R11
1
100k
R5
1
51k
R6
1
10k
R7
1
4.7k
R9
1
470
R10

Pico midi2cv design files

The KiCad project lives in the peterzimon/pico-midi2cv repository on GitHub; these links point at the commit this page was built from.

Pico midi2cv: common questions

What microcontroller does the Pico midi2cv use?

The Pico midi2cv is built around the 10u, from the RP2040/RP2350 family.

How big is the Pico midi2cv PCB?

The Pico midi2cv measures 75 × 100 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pico midi2cv?

37 components, from 33 distinct parts. The full bill of materials is listed on this page.

Where can I download the Pico midi2cv design files?

From the peterzimon/pico-midi2cv repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Pico midi2cv design in my own project?

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

Can I test firmware for the Pico midi2cv 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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