Vulcan DCO

Maker	Gerbster
Type	Digitally controlled oscillator based on the Roland Juno DCO core
Mounting	Through-hole
Width	—
License	Proprietary (No licence published)
Difficulty	🌶️ Large through-hole

Clone of Roland Juno 106 DCO core. A microcontroller clocks an analog ramp generator, and a DAC compensates the input voltage so amplitude stays flat as frequency rises. Built and working, only the final faceplate is outstanding.

Documentation

• Bill of materials (BOM)
• Schematic
• Fabrication files (PCBA-ready)

Links

• Source / files on GitHub
• Maker page

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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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