YUSynth Steiner VCF

Maker	Gerbster
Type	Steiner multimode filter with digital mode selection
Mounting	Through-hole
Width	—
License	Proprietary (No licence published)
Difficulty	🌶️ Large through-hole

Clone of Steiner-Parker filter via YuSynth. Filter core follows the YuSynth design, but the rotary mode switch is replaced by an ATtiny driving an ADG412 SPST switch. That adds HP+BP and LP+BP to the usual HP, BP, LP and AP modes. Firmware still needs a rewrite.

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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