External Tap Tempo for 2 Effects

[64fx]

I know this is a dumb question, but I'm about to order some parts and wanted to make sure to order the right things.

I'm looking to build an external tap tempo switch to use with a Boss Phase Shifter and later with a DD-7 when I get it.  I want to build one box that will work with both.  I've searched the forum and found threads that were close to this but nothing exactly like what I'm looking for.

What I'm thinking is to get a momentary switch (the SPST "Soft-Touch" from Small Bear) and wire one lug to the sleeves of 2 mono jacks and the other lug to the tips of the jacks.  Will this work?  I read something in one thread about putting diodes between the switch and the tips of the jacks.  Is that necessary?

Also, will it be a problem to only use one jack for now with the phase shifter and wait to use the other jack until I get the DD-7?

Thanks!
Daniel

[sevenisthenumber]

It will work fine! Thats how you do it! NO issues on not using one of the jacks either.. 

[64fx]

Thanks!  No need for the diodes either right?

[davethegoat]

 I am looking to try something similar but with a stereo output for controlling two devices simultainiously. Using a headphone extender cable and wiring into a mono "Y-cable" at the other end. Will your idea work the same for this?
-goat

[64fx]

Someone correct me if I'm wrong, but I think that will only work if the connections on the headphone extender and Y-cable are both mono.  Can you just use the Y-cable or do you need the extender?

[davethegoat]

I had to build my own, and it required two switches close together on the same project box. I used a four pin din connector and made my own cable by splicing a midi cable. If I had it to do over I wouldve just used a five or seven pin female on the project box because then I would be able to just use a 5, or 7 pin midi cable instead of making one. On the other side I have another project box with the female din, and wired the two pairs of wire to two separate 1/4" females. From there one goes into the pedal in on my g-force and the other goes to my DD-7 pedal which is also racked and running in the fx loop. Trust me there are no four-conductor momentary buttons or switches out there. The trick is to keep fs button close so that when u stomp it triggers both simultaneously. There is no way to split a momentary switch's output signal because both "wires" touch or terminate when in use. If you try to split the wire it will not terminate.
Let

[spargo]

I just did this exact thing in a 1590A enclosure with 3 output jacks because that's all I could cram in there.  I can tell you it works great with one pedal (my Boss DD-20).  That's the only tempo pedal I have at the moment, but I'm building a tap tempo tremolo very soon that I will test the multi-pedal setup with.

The only thing is that some pedals have reversed polarity.  I don't think this is an issue - it just means that on some pedals it receives the tap when the switch is down, and others when the switch is up.  Ultimately it will set the tempo the same but if you have tempo lights on the pedals they may be reversed from one another...no biggie.

[Processaurus]

I read something in one thread about putting diodes between the switch and the tips of the jacks.  Is that necessary?

It's the safe way to go.  Is it possible that certain combinations of pedals might function without them? Sure.  But I wouldn't bank on it.  If you're ordering from small bear, Steve stocks schottky diodes, those will be best because of their lower voltage drop, while still acting as a one way street for the current from each pedal to not interact with the other.