Looking for an a/b/c switch box

[guile]

I'm looking for a layout of an a/b/c switch box (like a Morley ABC Selector Combiner Switch or George Lynch Tripler. I have three guitars that I need to switch regularly.
Can anyone point me to a layout (if this exists)?
Thanks!

[Transmogrifox]

I don't know of any specific layouts, but I could certainly cook something up -- but here's the question:

Do you and it to be powered?  In other words battery to show LED status of which channel is selected.

This could be done easily with plain mechanical switches if no battery power is required.  It could still be done easily with LED indication without any electronics -- just need to use more switch poles to do it.

Also, would you want a buffer (line driver), or just a simple switch?

Another option is to use a single pushbutton and step through the channel selection ( a battery-powered solution here ).

Maybe somebody else knows of where there is already a layout for such a thing, but I would have fun cooking one up if nobody else offers a good suggestion.

Another thing to consider is Morley does post schematics of their products online.  If you feel confident going from schematic to layout then you may consider using their product as an educational tool and base your design on the Morley features that appeal to you.

[guile]

I don't know of any specific layouts, but I could certainly cook something up -- but here's the question:

Do you and it to be powered?  In other words battery to show LED status of which channel is selected.

This could be done easily with plain mechanical switches if no battery power is required.  It could still be done easily with LED indication without any electronics -- just need to use more switch poles to do it.

Also, would you want a buffer (line driver), or just a simple switch?

Another option is to use a single pushbutton and step through the channel selection ( a battery-powered solution here ).

Maybe somebody else knows of where there is already a layout for such a thing, but I would have fun cooking one up if nobody else offers a good suggestion.

Another thing to consider is Morley does post schematics of their products online.  If you feel confident going from schematic to layout then you may consider using their product as an educational tool and base your design on the Morley features that appeal to you.

Thanks for your reply!

I found the schematic of the Morley ABC switch: http://www.morleypedals.com/abc09es.pdf

Could you turn it into a layout? Would be absolutely fantastic!

[peterg]

There are so few components you could do point to point.

[guile]

Maybe I could, but a layout would be a great help for me

[Transmogrifox]

There were so few components it was easy to do the layout
Try this:

[guile]

Thank you so much!
Really, really great.

[guile]

Small question: how would the wiring be with 3pdt-switches?

[Transmogrifox]

Small question: how would the wiring be with 3pdt-switches?

Exactly the same.  Just pretend the layout shows an extra row of unused terminals that are not connected to anything. 

Since the 3PDT has 3 rows x 3 columns it will be up to you do ensure that you don't transpose rows and columns.  You can check this with a continuity checker on your DMM.

[guile]

Thanks again man!

[guile]

I feel stupid, but I can't get this to work....
Could someone pleawse take a look?
I intentionally did not wire the electric part yet.

https://www.flickr.com/photos/115176149@N03/16627482358/

[stallik]

Your switches are aligned incorrectly. You have wired them as if the switching goes from left to right when in actual fact, it goes from top to bottom. Not an uncommon mistake

[guile]

Your switches are aligned incorrectly. You have wired them as if the switching goes from left to right when in actual fact, it goes from top to bottom. Not an uncommon mistake

Thank you. Do you mean the rows/columns of the switches or the actual order of the switches?
Is the above layout incorrect?

[stallik]

The rows and columns.

- - - on
- - - common
- - - on

I think you've got the switches rotated 90 degrees

[Transmogrifox]

The wiring looks correct otherwise for the signals.

For 9V, I see that switch on the left has 9V to one post and a ground right next to it.  When you activate that switch it will short out your power supply.  I will suppose once you get the rows/columns corrected you will review layout for the power to LED's and probably get it worked out.

Just wanted to mention it in case you miss it.

[guile]

Worked out great!  Very happy with it.
Thanks everyone for clarifying!

[Transmogrifox]

Glad it worked out.  Now maybe you can go play 3 guitars.