DIY Eurorack Builds

Alpha Osc

FPGA digital oscillator with very low aliasing and Alpha Juno waveforms · Russell McClellan

MakerRussell McClellan
TypeFPGA digital oscillator with very low aliasing and Alpha Juno waveforms
MountingSMD
Width
LicenseProprietary (GPL-3.0 covers the code, no hardware grant)
Difficulty 🌋 Fine-pitch SMD

Clone of Waveforms inspired by the Roland Alpha Juno. Four layer board with a Lattice MachXO2 FPGA and an ATmega for the CV ADC. The oscillator runs in the megahertz range to keep aliasing low. FPGA gateware is written in Clash. The README calls it an advanced build at your own risk.

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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