Guitar Effects with Sustain Pedal.

[Kev Lambert]

I'm trying to play my guitar and use my sustain pedal for effects, but I'm having trouble setting it up.  Is it even possible?  I tried Chatgpt, but it led me to a dead end.
I just want to use my sustain from my keyboard controller as a footswitch for effects on my guitar, which is plugged into my Scarlett 2i2

[Kev Lambert]

Maybe I should clarify, my sustain pedal is going to my keyboard controller.

[reginaldStjohn]

If your keyboard controller sustain pedal produces a midi message then you should be able to, on many VSTs, right click on the button you want to control and it will have a "midi learn"  function you click. Then you step on your sutain pedal and the button will be assigned your sustain pedal midi message as its control.

However, a sustain pedal only produces on and off states so all you can really do is have something turn on when you are stepping on it an off when the pedal is off.

Edited 20 hours ago by reginaldStjohn

[Amberwolf]

Some effects, like the Lexicon (somethingorothermodel) I've got in the rack, have a footswitch input that can be used directly with a pedal like a sustain pedal.  On mine it's a TRS plug, and supports two switches for controlling different things (it comes with a dual switch), but a single switch like a sustain pedal can be used. 

 

Some effects, like the Digitech (somethingorothermodel) a friend of mine used to use for onstage effects, had a footswitch input *and* a "CV" input, which is for a pedal that has a potentiometer in it that allows variable control of something.  On most keyboards that's volume by default, but is often programmable in the keybaord (or sound module) for different things; same for effects boxes that support CV (expression) pedals.  

 

Random article from google search on "CV pedal"

https://www.perfectcircuit.com/signal/expression-pedal-cv