How do I make a voltage-controlled signal router for my eurorack system?

Thread Starter

DamianTheAlien

Joined Feb 6, 2025
1
Hi All,

I have an XVCO Two from Frequency central, and I want to add voltage-controlled octave shifting (by means of hijacking its rotary octave switch). Do similar circuits exist already, and are there any resources/guides I should look into?
I found a thread discussing a similar idea, although it's just a one-channel on/off, rather than a muli-channel router.
https://forum.allaboutcircuits.com/t...ircuit.138354/
Is it possible to extrapolate the concept by stacking comparators? If so, what would that schematic even look like?

For reference, this thread contains the Roland 100m schematics.
https://modwiggler.com/forum/viewtopic.php?t=237408

Many thanks in advance!
 
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