[sdiy] Time for a NEW string - Piezo Switches!!!

[harry]

If they are piezo that might be really tough. By nature, Piezos are
capacitive and their output is basically the derivative of the force
applied... so they are by nature momentary devices.

You might trick one out by running into a very high impedance and letting
the self-capacitance of the switch hold the voltage until you release it and
let
it return to normal position.

OTOH I'm blowing it out my @ss having no direct experience with the
particular piezo switch you are using  ;^P

H^) harry

Peter Grenader wrote:

> Guys,
>
> I have 10 piezo switches. They are kind of like the ones shown as the site
> backdrop here:
>
> http://www.piezoswitch.com/
>
> But those have tactile feedback - mine are just flat clear annodized
> aluminum.  They are made by Peizo Develpment Inc. Two wires coming out the
> back.  Anyone have a drive circuit for one of these babies?  I just want to
> get a pulse out that stays on as long as the button is down.
>
> Let me know and thanks,
>
> Peter

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