DIY Eurorack Builds

Moduleur Brain

Raspberry Pi Pico digital module with MIDI, CV and pulse IO ยท Shmoergh

MakerShmoergh
TypeRaspberry Pi Pico digital module with MIDI, CV and pulse IO
MountingMixed
Width12 HP
LicenseProprietary (CC BY-NC, noncommercial so not an open licence)
Difficulty ๐Ÿ”ฅ SMD (0805)
Moduleur Brain module
Photo: Shmoergh

A blank digital slot: three buttons, two pots, six dimmable LEDs, two audio or CV inputs and outputs, pulse in and out and a protected MIDI input, all driven by an actual Pi Pico. An SDK and a growing set of firmwares cover sequencers, MIDI to CV and a lo-fi delay. Part of the Shmoergh Moduleur, a full DIY analog synth whose modules also work standalone in any Eurorack case. Split into a core PCB and a UI PCB; the core is mostly 0603 chip parts with JLCPCB gerbers and pick-and-place files, so the surface mount side can be fab assembled.

Documentation

This is a third-party open-source design, listed here as a build reference. Specs are researched from public sources; check the source repo and store for the current BOM, panel, and revision before ordering parts. Corrections welcome.

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