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DIY Stompboxes => Building your own stompbox => Topic started by: ArthurY on April 18, 2021, 08:39:02 PM

Title: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 18, 2021, 08:39:02 PM
(https://i.postimg.cc/rDn4BjPb/D94468-A2-354-B-4-FEA-8560-66-EA5551-B338.jpg) (https://postimg.cc/rDn4BjPb)


Hi, i would like to turns that lopper switcher guitar pedal into a lopper switcher vocal pedal.
So i will replace all the jacks by XLR female and male.
But i was told that the 4PDT won't havé enough pole and i'm gonna need like 3x7 poles. I was also told that i can find a toggle switch like that but not a footswitch.
But i can't find any switch with more than the 4PDT ..
Is this switch even real or is there another solution ?
Thanks for your help :)
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: Ripthorn on April 18, 2021, 10:50:35 PM
You will have to go with multiple relays.
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: PRR on April 19, 2021, 12:00:34 AM
Welcome!

4PST and 4PDT   
https://www.surplussales.com/switches/SWToggle-1.html
https://www.surplussales.com/Switches/SWLeaf-1.html
8P and 10P clacker switches (mostly out of stock)
https://www.surplussales.com/Switches/SWLedex-1.html
16P3T  and 16P18T Rotary Switch
https://www.surplussales.com/Switches/SWRotaryAll-1.html

I agree that multiple 4P2T relays is most practical.
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: garcho on April 19, 2021, 02:31:58 AM
Do you want to make this because you have effects with XLR inputs that you want to use?
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 19, 2021, 05:51:08 AM
Yes, i have to vocal multi effect that i want to use seperatly
Ok i'll go with relay. I'm gonna make research cause i don't know anuthing about relays
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: FiveseveN on April 19, 2021, 09:55:11 AM
Is it one multieffect or multiple effects that you want to bypass/switch?
Do these effects not have bypass or MIDI control? Because an ATtiny and a single pole switch is much cheaper and more elegant than multiple relays and XLR connectors.

Could you tell us exactly what you're trying to do?
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: Axldeziak on April 19, 2021, 10:18:32 AM
If you need two switches worth of connections, then why not just use two switches?
Install them side by side and make a connector that attaches to both so you can stomp two at once.
Why complicate something simple?

(https://i.postimg.cc/p55Y7SKT/double-switch.png) (https://postimg.cc/p55Y7SKT)
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: Mark Hammer on April 19, 2021, 10:24:10 AM
I have some 8P4T rotary switches I bought from a surplus place decades ago, if that'll work for you.  Yes 8 different sets of contacts that can each be sent to 4 different spots.

(https://i.postimg.cc/KkcJy0nq/100-8866.jpg) (https://postimg.cc/KkcJy0nq)
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: BJM on April 19, 2021, 10:41:40 AM
Quote from: ArthurY on April 18, 2021, 08:39:02 PM
Is this switch even real or is there another solution ?

Never heard of a 7pdt switch but 8PDT is real  :)

https://eu.mouser.com/ProductDetail/CK/F8UEE?qs=WS%2FiepCTwPAUJtg7UL6fuA%3D%3D
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 19, 2021, 11:37:14 AM
Quote from: FiveseveN on April 19, 2021, 09:55:11 AM
Is it one multieffect or multiple effects that you want to bypass/switch?
Do these effects not have bypass or MIDI control? Because an ATtiny and a single pole switch is much cheaper and more elegant than multiple relays and XLR connectors.

Could you tell us exactly what you're trying to do?

It's two multieffect pedals. (the looper in the pic is for guitar, this is why i'm trying to build a new one for vocals)
The AT tiny needs to be programs (if i understand it right) and i don't have the tools to program a relay ...
(https://i.postimg.cc/nCMRNJqx/schema-pedalboard-voix-1.png) (https://postimg.cc/nCMRNJqx)


Quote from: Axldeziak on April 19, 2021, 10:18:32 AM
If you need two switches worth of connections, then why not just use two switches?
Install them side by side and make a connector that attaches to both so you can stomp two at once.
Why complicate something simple?

(https://i.postimg.cc/p55Y7SKT/double-switch.png) (https://postimg.cc/p55Y7SKT)


Ok i sort of get the idea but if i have two switches, it means it is a A+B box ?




Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 19, 2021, 11:46:26 AM
Quote from: BJM on April 19, 2021, 10:41:40 AM
Quote from: ArthurY on April 18, 2021, 08:39:02 PM
Is this switch even real or is there another solution ?

Never heard of a 7pdt switch but 8PDT is real  :)

https://eu.mouser.com/ProductDetail/CK/F8UEE?qs=WS%2FiepCTwPAUJtg7UL6fuA%3D%3D

Oh thx ! It may be the solution for my pedal. But still i dont understand how it works. It is different from a 3PDT or a 4PDT.

(https://i.postimg.cc/Sjt3SrLc/3PDT.png) (https://postimg.cc/Sjt3SrLc)
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: BJM on April 19, 2021, 12:00:14 PM
Hi,

This switch works i.m.h.o. the same as a 3PDT or 4PDT, it's only bigger with more poles. But there's always the data sheet,
https://eu.mouser.com/datasheet/2/60/fpush-1841530.pdf :).

The switching is explained there in detail, it even says they also have a 10PDT switch (which may be handy if you want to add some leds).


Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 19, 2021, 01:31:54 PM
Quote from: BJM on April 19, 2021, 12:00:14 PM
Hi,

This switch works i.m.h.o. the same as a 3PDT or 4PDT, it's only bigger with more poles. But there's always the data sheet,
https://eu.mouser.com/datasheet/2/60/fpush-1841530.pdf :).

The switching is explained there in detail, it even says they also have a 10PDT switch (which may be handy if you want to add some leds).




So i'm correct 0 is the common and it goes like that : position 1 in green et position 2 in pink. Is that right ?

(https://i.postimg.cc/y3c1YfNj/schema-poussoire.png) (https://postimg.cc/y3c1YfNj)
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: BJM on April 19, 2021, 01:41:06 PM
Yep, that's how I read it also. The common pins on the bottom of the switch and other ones on the top half. It's doesn't look sturdy enough for stomping with your foot but may you could use a switch actuator.
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 19, 2021, 02:09:22 PM
Ouf ok ! Make sense to me now :) Thank you !!

Here's a poor drawing, sorry i tried to make it as clear as possible. So if the the drawing is good, a 6PDT is enough, am i right ?
And i still have place to put LED ?


(https://i.postimg.cc/wtdgwK9k/schema-looper-voix.png) (https://postimg.cc/wtdgwK9k)
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: BJM on April 19, 2021, 03:07:59 PM
Hi Arthur,

I'll take a look at it  :). The two jacks on the bottom half are input and output (one output)? Wouldn't is be simpler to connect both outputs from the effects directly to the mixer (providing your mixer has enough inputs)? It would make the switching a lot simpler and give you more control over the sounds.
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 19, 2021, 03:30:52 PM
Sorry i totally forgot to write all the in and out.
Here's the good pic

(https://i.postimg.cc/S2M7LtfC/schema-looper-voix.png) (https://postimg.cc/S2M7LtfC)

My pedal have two loops so i would like the signals are send back in the A/B box and then switched to one ouput.


Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: BJM on April 19, 2021, 03:32:20 PM
Just edited my comment, I got the picture  :).
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 19, 2021, 04:01:25 PM
Damn it ! I've make another mistake, the xlr at the left is not a SEND but a IN.
When you say mixer you're talking about a mixing table ?
Honestly i don't know if it would be simplier, i don't have enough experience or knowledge ahah
Can i ask you to make drawing, when you'll have time ? there's no rush :)
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: BJM on April 19, 2021, 05:42:15 PM
My mistake, I overlooked you switch the two effect outputs also. I think your schematic is OK, but I'll take a look tomorrow.
Btw, here's a page of someone building a similar pedal,

https://blog.airmann.de/diy-xlr-ab-switch-box/

This is a simpler  A/B box, but stereo so if you read the jacks as follows this wiring schematic should work for you:

C1=input, C2=output, A1=Send1, A2=Return1, B1=Send1, B2=Return2. Basically everything after the returns is mirrored from the stuff before the sends. Note this schematic uses 2 DPDT switches so without the leds it should be possible with one 4PDT
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 21, 2021, 07:31:48 AM
Yes i do think so that without led i can make it with a 4PDT but i really want to explore all the solutions to try to put some led. But im starting to think that there is none. I have to make relays which i can't.

By the way i buy the 6PDT you sent me. But i receive that : https://www.google.com/imgres?imgurl=http%3A%2F%2Fmedia.digikey.com%2Fphotos%2FCK%2520Comp%2520Photos%2FF6UEE.JPG&imgrefurl=https%3A%2F%2Fwww.digikey.fr%2Fproduct-detail%2Ffr%2Fc-k%2FF6UEE%2FCKN9666-ND%2F2054944&tbnid=xbHwAMya-x4DNM&vet=12ahUKEwij16CLio_wAhVWgc4BHWtaCoQQMygBegQIARA1..i&docid=RsbJnyeGHA-10M&w=640&h=640&itg=1&q=F6UEE&ved=2ahUKEwij16CLio_wAhVWgc4BHWtaCoQQMygBegQIARA1

The one on the image you sent and the one i received is not the same serie. And the one i need is not manufactured anymore  :'(
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 21, 2021, 07:36:00 AM
EDIT : I've double the message by mistake
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: BJM on April 21, 2021, 10:35:26 AM
Hi,

That switch looks OK to me. You'll only use 4 poles for the signals so you have 2 poles left for the leds (4 leds maximum  :))

Good luck!

Bert
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on April 21, 2021, 01:30:03 PM
Hi, i agree that i have enough poles but i can't screw  the switch on the enclosure. It's not made for it
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: FiveseveN on April 21, 2021, 02:31:06 PM
Why can't you use relays? It's the best solution under the circumstances and you get indicator LEDs for free (no need to use up a switch pole).
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: BJM on April 21, 2021, 05:40:20 PM
Quote from: ArthurY on April 21, 2021, 01:30:03 PM
Hi, i agree that i have enough poles but i can't screw  the switch on the enclosure. It's not made for it
That's true it's not your normal footswitch. It isn't even a footswitch but a push-button. Solution could be, if you want to use a "normal"enclosure, like a Hammond 1590b or 125B, to have it go through the side of the enclosure and push it with your finger (or very carefully with your foot). Maybe in combination with an actuator like this:

http://www.banzaimusic.com/Switch-Actuator.html

Theorically you could this with the switch on top but I think you'd end up with a very tall enclosure.

Otherwise a 4PDT footswitch on top but then without the leds.
Title: Re: 7PDT for AB looper switcher vocal pedal ?
Post by: ArthurY on May 12, 2021, 11:16:07 AM
Ok so im going with the relay and pbc solution
I keep you in touch :)