Smallbear 4PDT footswitch

Started by Strategy, November 03, 2009, 01:21:50 AM

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Strategy

I got one of these 4PDT footswitches for my JH Tau Pipe Phaser project, which is ordinarily not configured for pedal (most ppl do rack or synth module, but it will make a fine, though not small, pedal.) Project info here: http://www.jhaible.de/tau/jh_tau.html

And the 4PDT is this: http://www.smallbearelec.com/Detail.bok?no=670

I've never used one of these in a project and the Tau of course is expecting you to use a toggle. I want to make sure I understand the pinout on the switch, no real markings to speak of and no data sheet. Help!

thanks diystompboxes.com!

- Strategy
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darron

a 4pdt will of course be the same as two dpdts put together, side by side....

and here's a quick look at how each side would work:





which can then consturct this:


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mth5044

Small bear used to have the wiring datasheet on their page, I though...

Anyway, I remember it was like what darron said, looking at it with it held horizontally (long ends on the top and bottom) the first three rows of lugs are one dpdt and the next three are another. I think that was how it went  ???

Ben N

Map or no, I always check it out with a meter before I start to solder, although with a 4PDT it ought to actually be harder to make a mistake than with a 3PDT.
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Strategy

That thread was very helpful thanks - sorry, I probably should have done a forum search before posting   ::)

This switch type has two rows of 6 so I'll test against the diagram in the thread with a meter and see if it's right.

I think the reason the Tau project requires a 4PDT is because of the stereo outputs, have to look again- the wiring diagrams aren't very extensive because there are so many optional ways to wire the panel components.

Thank you!!!
- Strategy
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Mark Hammer

two rows of six is most likely laid out like a pair of DPDTs laid end to end or side-by-side, depending on which direction the lugs are facing.

Strategy

Thanks Mark. Unfortunately it's pins instead of lugs which makes that a bit murky! I wish it was lugs, wiring this thing is gonna be fun! a huge pain!  :-\
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aziltz

Quote from: Strategy on November 03, 2009, 12:16:59 PM
Thanks Mark. Unfortunately it's pins instead of lugs which makes that a bit murky! I wish it was lugs, wiring this thing is gonna be fun! a huge pain!  :-\

you could always solder it to a bit of perf or pcb and use that for wiring.