DIY Eurorack Builds

Moduleur VCO

Analog VCO with sub oscillator, noise, PWM and hard sync · Shmoergh

MakerShmoergh
TypeAnalog VCO with sub oscillator, noise, PWM and hard sync
MountingMixed
Width
LicenseProprietary (CC BY-NC, noncommercial so not an open licence)
Difficulty 🔥 SMD (0805)

Raw saw core into classic waveshapers for triangle, saw and square, with a jumper-selected sub oscillator or noise source. Tracks about seven octaves and offers two temperature compensation options, one of them all through-hole. 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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