VCO

Maker	Marten Agren
Type	ATmega and DAC assisted VCO with dual outputs and sync
Mounting	Through-hole
Width	—
License	Open source (MIT over a hardware-only repo)
Difficulty	🌡️ Medium through-hole

The maker's earliest module and the only fully through hole one: DIP ATmega328P, TL074 op amps, an MCP4802 DAC and radial caps. The README is a trimmer calibration procedure. Gerbers ship as Altium exports in two zips, one for the board and one for the UI.

Documentation

• Assembly instructions
• Bill of materials (BOM)
• 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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