FV-1 Delay Freakout/Havoc Switch

DougACB

New member
Hi folks,

First post here! Currently working through the design process with a friend of mine for a customized delay build. The hangup I'm stuck on is focused around how the potentiometers interact with the FV-1 program.

His requests are a delay with pitch shifting options on the repeats, exp pedal control for the delay time, and a momentary freakout switch (max feedback) for oscillation.

The Octagon is the basis I wish to start from, as it already has the pitch delay setting as well as lots of other modes to play with. It is also compatible with an expression pedal as documented in this thread:


With the design coming from Mad Bean:


I have read a few threads about adding a freakout/havoc switch to analog delays, with the momentary footswitch being tied to the feedback pot with a trim pot, allowing the feedback resistance value to be changed when the footswitch is pressed down, as documented here:


Looking at the circuit for the Octagon, while the delay is controlled by the program in the FV-1 chip, it is still influenced/controlled by the position of the potentiometers (in this case, B100K pots). Would using a trim pot and momentary switch to change the resistance signal to the program not change the feedback coming from the delay? I would think that it should work but all of the threads around feedback switches are focused on analog delay builds.

I have a good handle on the analog stuff but the world of digital fx is certainly above my expertise. If this isn't an option without making changes with SpinCAD then I will pursue a more convoluted method of adding pitch shifting etc to an analog delay architecture.

Thanks!
Doug
 
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