Cordyceps Ring Modulator Octocoupler

[Betty Wont]

I haven't gotten my pcb yet so I don't know what's printed on it. Is the vactrol in the Cordyceps something special or is the standard roll-your-own guy fine here?

 

[Robert]

I'll get the BOM posted for you today.

I used VTL5C9 in the prototype, I meant to try a hand rolled opto but completely forgot about it.

If I get a chance I'll pop one in and see how it does.

 

[Robert]

Cordyceps Ring Modulator

Cordyceps Ring Modulator

forum.pedalpcb.com

 

[Bricksnbeatles]

Oh dang I didn’t even see that it hit the store yet! Gonna jump on that asap

 

[Betty Wont]

Oh dang I didn’t even see that it hit the store yet! Gonna jump on that asap

I know, right?! this one has me super duper excited.

 

[Cvoxdog]

What's a good source for the vtl5c9? Not sure if those 5 for $10 are legit.

 

[Robert]

I got mine from StompBoxParts.

VTL5C9 - Vactrol/Optocoupler

Top Quality Parts for Guitar Effects Pedals and DIY Music Devices. Knobs, Pots, Switches, Kits, LEDs, Enclosures, Jacks, Wire, Resistors, Capacitors, Semiconductors

stompboxparts.com

 

[Robert]

What's a good source for the vtl5c9? Not sure if those 5 for $10 are legit.

I'll order one of those "too good to be true" sets and see how they perform.

 

[fig]

I'll order one of those "too good to be true" sets and see how they perform.

I saw them at the Garden in '76, but they dropped off the circuit after that. I figured they broke up.

 

[DGWVI]

I've got a variety of Vactrols I can audition in it. Though, no 5C9s.
My boards should be here today, so will get it worked up tomorrow or Wednesday.

Curious to see how similar it is to Craig Anderton's Balanced Ring Modulator

 

[Robert]

Curious to see how similar it is to Craig Anderton's Balanced Ring Modulator

It's definitely based on the Anderton Ring Mod with an added gate circuit for the carrier frequency.

 

[DGWVI]

It's definitely based on the Anderton Ring Mod with an added gate circuit for the carrier frequency.

Sweet. I'm super stoked for this one

 

[Bricksnbeatles]

@Betty Wont will you, like me, be adding an expression jack for the frequency to get pseudo I’ll-be-your-Jonny-on-the-spot solo tones?

 

[Betty Wont]

@Betty Wont will you, like me, be adding an expression jack for the frequency to get pseudo I’ll-be-your-Jonny-on-the-spot solo tones?

Nope. It’s a great idea but I don’t mess with expression pedals. The only wah I’ve ever had was the mold spore and I had it only for the ring mod.

 

[Bricksnbeatles]

Nope. It’s a great idea but I don’t mess with expression pedals. The only wah I’ve ever had was the mold spore and I had it only for the ring mod.

I definitely get that. I might just put it in a 1590BB with a TapLFO with all the bells and whistles so I can get the same sort of effect (especially on the smooth-random waveform) without an expression pedal

 

[Betty Wont]

@Betty Wont will you, like me, be adding an expression jack for the frequency to get pseudo I’ll-be-your-Jonny-on-the-spot solo tones?

I just got my meat box though and and I’m rocking some reggeajunkiejew through it!

 

[DAJE]

I'll order one of those "too good to be true" sets and see how they perform.

I ordered these from AliExpress, the same ones that are available everywhere else. I doubt they're Xvive related, but there's a good chance they'll work, it's not a complicated design.

I have some LDRs so I could easily make my own if I knew what to test for. Or I could experiment, I guess.

 

[DGWVI]

I ordered these from AliExpress, the same ones that are available everywhere else. I doubt they're Xvive related, but there's a good chance they'll work, it's not a complicated design.

I have some LDRs so I could easily make my own if I knew what to test for. Or I could experiment, I guess.

I've had some of those in the past. If I recall, they're actually closest to VTL5C3

Datasheet -

 

[DGWVI]

I've had some of those in the past. If I recall, they're actually closest to VTL5C3

Datasheet - View attachment 47566

Still have one in my stash, so I'll give it a go

 

[DGWVI]

Here's a quicky with the ST / SR VTL vactrol. Null is still set to center

Also, didn't realize until after the vid that I neglected to finish soldering the spdt