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A CA3080 OTA, an expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules f80e4975fb checkpoint before getting really weird with WireIt A couple more GND-stitch vias Latest commits for file Schematics/MK_VCO_RADIO_SHAEK_try2_ground_rail.diy From 605f29538db81c6c2eb02428332e653ea5ee7e41 Mon Sep 17 00:00:00 2001 Subject: [PATCH 11/18] Add a front-panel PCB Subject: [PATCH 18/18] Final revision; added custom DRC as project file 33729ec97f6dd2ed68c4ca06088ce0b21651948d Align panel to integer pseudo-origin.

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