John GuyI just uploaded the correct schematic. I left the old one, it is from 2020, and is a very different topology. I might have had boards made, but I know I never built them.
All the parts are here except AD8534, that should be a couple days.
Update April 25 2023
A project log for Beeper Box: Analog V2F
A very useful test fixture to convert the voltage or impedance seen on its input to a variable frequency audible tone
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