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Thank you. That makes sense. Appreciate it!

Hi all

I'm looking to add the following mods to my Vox V847:

True bypass switching
LED
DC jack

The only wiring diagram I can find that shows all three of these mods for my specific model of wah is the one in this very grainy image



I'm redrawing the image to make it easier to read, but need some help with the 3pdt please.

From the image, it's difficult to tell which way round the original creator has drawn the switch. The 'regular' way is to draw the 3pdt with the lugs running horizontally, but the image looks as if they might be running vertically...






I'm hoping that someone cleverer than me will be able to work out which way round the switch is shown in the wiring diagram from the way the other components are connected to it.

Any help would be greatly appreciated.

Thanks Brian.

Much appreciated as always.

You can just wire the sleeves together. No need to send them to the switch.

Ahh ok, thanks.

Like this then? Does the switch not need a ground connection at all?

This should do it.

Thank you. Like this?

I got a little thrown off by your labeling. You are switching between two expression devices and outputting the selected one to your effect, correct? In that case, you have two ins and one out not the other way around. Or did I misunderstand?

Ahh, you're right. I've been out of the game a little while and I'm rusty. Thanks for spotting the error.

I've corrected the image in my original post.

Hey all.

I'm looking to build an A/B switcher with 3 TRS jacks, so I can connect one effect pedal to two expression devices and switch between which one controls the pedal via a foot switch.

I've built heaps of pedals in the past but usually work from kits so just hoping someone here can help me with how to wire it all together. I've found examples on Beavis Audio but they only show mono jack sockets which unfortunately won't work for my needs.

I won't be needing an LED so just need help connecting the 3pdt and the three jacks as per the image.



Any help would be much appreciated.

Thanks

Edit: Fixed the mistake in the image as per Brian's message below

Late to the party (there was a party right?) but wishing you a very happy birthday Brian. Hope you had a blast.

Thanks guys. The similarly named vactrols, their reissues and differing layouts of the circuit certainly make it a bit confusing.

What other filters would you recommend Thewintersoldier?

I like the 440 as it's (seemingly) simple and has a low parts count.  And because it's the one Jonny Greenwood used on Paranoid Android. 

Thanks both for the replies. Looking around the different forums it seems that 440 clones (be it the Mirror Ball, Sawse or  EF440 from General Guitar Gadgets) have a very hit and miss success rate.

I've just put my Mirror Ball together using the vtl5c/3 I have and whilst it 'works', there's definitely something not right. The envelope just doesn't respond in the way it should, it's really wobbly and unstable sounding. I'm also getting some background fizzy distortion when using the neck pickup.

I'll give the LED/LDR combo a try as per your message above Jimi but I won't hold my breath for a better result. Fingers crossed though!

Thanks again.

I've been searching for DOD 440 builds on the forum as I'm about to build one myself and came across this old post from Jimilee - https://www.madbeanpedals.com/forum/index.php?topic=26019.msg252490#msg252490


I have the VTL5C4/2 vactrol asked for in the BOM, but can see that in the link above, Jimi successfully rolled his own. I'd like to give this a try just for the hell of it but have a couple of questions I hoped someone might be able to help with.

Here goes - The VTL5C4/2 has 3 legs on one side and 2 on the other - 5 legs in total. If I'm making my own from an LED (2 legs) and an LDR (2 legs) then that leaves an unused pad on the PCB.

Do I just leave a pad empty?
If so, which one?

Any advice would be greatly received. Thanks!

Reading this again, I'm not as clear on it as I thought I was.

Is there any way you'd be able to draw up a basic sketch?

Please and thank you!

Well that sounds sounds simple enough to try.

Nothing ventured, nothing gained and all that!

Cheers, I'll give it a shot and report back

Hi all

On my my pedalboard I have a multi effects that I use for a few rarely-used effects that don't warrant spots of their own on the board.

The problem is its noisy when turned off so I'm going to build a bypass loop pedal for it.

Question - Is it possible to build a loop pedal with two footswitches? One latching, one momentay.

Is anyone aware of a project or layout for something like this?

Thanks as always.

Thanks for the suggestions. I'll definitely check them out.