Written by knopsl

4046 Squarewave VCO

I did a bit of tinkering on this one but sadly didn’t document it too well. For now this was my starting point and I’m sure it is not far away from my final build.

The Mod input makes it a pretty freaky FM kinda VCO. Have fun with it.

Link to CuSis Youtube Video on the matter: 4064 VCO

CuSi Sound layout
Kristan Blasols schematic from MiaW
How to modify? All I remember is if you have problems with the CV input then you can try an Offset pot like this (or if you use a bipolar powersupply maybe switch the ground connection with -12V for example)