Adding an expression jack to my Mute switch!

[Hatredman]

I tried to convey an "opto pot", making a voltage divider with two LDRs. I may be wrong but I don't think we can get full cut on volume with just one series LDR. But yes, it will work, with some limitations and a way simpler circuit.

[ashcat_lt]

You're not likely to get full cut either way.  Also not likely to get no cut.  LDRs never go to 0R, nor do they ever actually go full open circuit.  It might be good enough, but...

With just series LDRs, the "bottom" of the divider is the amp input, which is probably like 1M.  The LDRs have to get really big before you hear much attenuation at all.

Can we please switch the amp inputs to ground when they're not being used?  I hate seeing them hanging open like that.  Especially if there's much of any gain at the amps, you're begging for all kinds of noise problems.  A ground lift/isolated jack for one or the other amps might be nice, too.

[idy]

The earlier versions of this thread dealt with grounding unused amp inputs.

It seems like using the Ev-5 to control the Ehx Pitchfork WHILE also using it to control the volume of the two amps is a stretch= impossible. Maybe to use it only as a speed control while using the Pitchfork and then switch it into volume mode, but like I say, it's getting complex.

You would have to use some kind of separate A/B Looper pedal to use the Ev-5 sometimes to control the pitchfork and sometimes (only when the pitchfork is bypassed) as a volume control.

You need a stereo volume pedal. The ones outlined above will work.  There was an old Morley Stereo volume (search) that worked with optos.

Also remember the Ev-5 has really low impedence. Maybe not an issue, but not intended for this purpose.

[idy]

Plus it would be way more fun just to have two mono volume pedals. Swell the echoey goodness in on one channel... You are into having two channels that you can kill individually.

[Hatredman]

It seems like using the Ev-5 to control the Ehx Pitchfork WHILE also using it to control the volume of the two amps is a stretch= impossible.

He never said he wanted to do that.

[idy]

I use it to set my speed of my EHX Pitchfork, so I didn't wanna mess the pedal up, but I don't use the Exp after I set my pitch rate. So now my rate is set to my liking. I just have an EXP pedal that isn't used. So I figured, let's see how we can make it a volume pedal, without compromising the original EXP. function???

I thought he was saying he wanted to use the pedal to set some parameter on the Pitchfork, then use it to control the volume. Maybe without tearing up and reconfiguring his board. Maybe he meant that he only wanted to set the pitch of the Pitchfork, then turn it off and switch the Ev-5 as a volume pedal. That possible interpretation lead me to suggest using an A/B looper. I suppose it could also be set up to do both things at once with chaotic results if the pitchfork is left on.

[FaithElectronix]

No. I want to use it for volume. I only got it for the pitchfork. Now it collects dust. So back to what me and kevin and hatred were on track with. @kevin you ever make any progress?  @Hatred i'm gonna see if i can use my buddies cable just to see what i can do.

[Kevin Mitchell]

No. I want to use it for volume. I only got it for the pitchfork. Now it collects dust. So back to what me and kevin and hatred were on track with. @kevin you ever make any progress?  @Hatred i'm gonna see if i can use my buddies cable just to see what i can do.

Sorry. Busy night, busy life. I didn't have time to tinker last night though I have considered what others have said. Since what I'll come up with isn't a wiring diagram but rather a small pcb, what is best for you? Vero, etching layout? Or could you follow a schematic and do your own layout? Just trying to accommodate 

I've just remembered I was fixing to make a volume/stereo pan circuit for a wah shell. Would you be interested in an option to pan one signal between 2 outputs?

To indulge, my inspiration was a live acoustic version of Shine on You Crazy Diamond. Gilmour would pan from a clean output to an ouptput with delay(to another amp) and then pan back to clean to solo over the fading delay. Brilliant stuff.

[FaithElectronix]

I can follow a diagram. That will work.