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Permalink Reply by Jon Leslie/Runaway Veal Music on March 26, 2013 at 4:13pm

touch a wire across the terminals of the switch?

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Permalink Reply by Jon Leslie/Runaway Veal Music on March 27, 2013 at 7:58am

Eric,
Where would I buy a 10M pull down resistor? Link was good regarding kill switches..

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Permalink Reply by eric gittins on March 27, 2013 at 1:39pm

the resistor goes across the terminals of the switch.  no wire across the switch, that would just be like activating the switch. 

the resistor across the switch should be of a high enough value that the current would normally rather go through the pickup/amp than short through the resistor.  this is what you do for normal magnetic pickups, but peizos don't show a static DC resistance.  they do indicate an impeadance though.  i'm not sure how the resistor solution works with a piezo, hence the 'hold the resistor across the switch and see how it works' idea. 

long leads and test clips would add capacitance, and you may still get a pop, which is why i suggest the resistor right on the switch, from one lug to the other.

e

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Permalink Reply by Jon Leslie/Runaway Veal Music on March 27, 2013 at 2:15pm

eric,
thank you...I'll prob do this at another time when using a regular guitar pickup in a future build. Where do you buy resistors ? Pretty new to wiring anything but basic piezos but this is great info for the future..

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Permalink Reply by Ron "Oily" Sprague on March 28, 2013 at 1:55am

Jon,
Rad Shack carries everything electrical. Here's the resistor you wanna wire across the switch terminals:

http://www.radioshack.com/product/index.jsp?productId=2062352

Model No. 271-1365, pack of 5, 10M resistors, $1.49

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Permalink Reply by Jon Leslie/Runaway Veal Music on March 28, 2013 at 6:10am

Right on. Thank you ...

Permalink Reply by dany freire on June 12, 2013 at 10:28am

Is this wiring diagram correct?

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Permalink Reply by Jon Leslie/Runaway Veal Music on May 26, 2016 at 9:39pm

This is an old post...wonder how to add a volume pot?

diagram 2 (which ended up working) might have had redundant wires both hot and ground) on the piezo disk ...I don't have that cbg anymore so I can't tell.

This is what did happen. The signal remained on and when I pushed the button the signal cut off. There was a pop unless distortion was added . I never used a resistor which might have helped the pop when run clean .
So I wonder if David L drawings would have eliminated the pop and eliminated the need for extra soldering on the piezo disc. Certainly would want to add a volume pot but have no idea where I'm diagram 2 it would go?

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Permalink Reply by Jon Leslie/Runaway Veal Music on October 15, 2016 at 2:18pm

Old post here....
I thought I had this solved but somethings wrong.
I got a piezo hooked up to a jack. It's fine.
I have an always closed kill switch.
Do I need an always open kill switch because I've checked with clips all these diagrams and it ain't working...any help here appreciated even though I thought I had this solved . No volume knob just piezo, jack and an always closed killswitch...

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Permalink Reply by Jon Leslie/Runaway Veal Music on October 15, 2016 at 2:46pm

What's so strange is I could swear I need a normally "closed" momentary switch
not a normally open....I'm so frustrated because I actually returned the right kind I think? I've tried so many combinations. Is it possible to wire this in reverse somehow to get the piezo to stay on except when I press the button? Thanks

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Permalink Reply by darryl kernaghan on October 15, 2016 at 3:23pm

I think the terminology refers to closed as being circuit incomplete, as in going to ground, or just stopped, if so, you probably need a "normally open" switch

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Permalink Reply by Jon Leslie/Runaway Veal Music on October 15, 2016 at 3:26pm

Thank you Darryl that's was it!!! Awesome!

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