[PD] piezo sensor to pduino object

Jose Luis Santorcuato santorcuato76 at gmail.com
Tue Sep 21 12:42:42 CEST 2010


Hey, the guy is using Arduino, well, you should use a resistance of 1 kohm,
the schedule is the same as I show you, you must use the red wire inside and
black outside your "penny" ... resistance to the ground will be used to
enter the analog, as a ldr, is the same pattern ... You can check it on the
web ...
http://webzone.k3.mah.se/projects/arduino-workshop/projects/arduino_meets_processing/instructions/ldr.html,
also you would need a flex sensor... more stability and non erratic
performance...

Best regards

José

2010/9/20 FernandoG <dataferx at gmail.com>

> Hi
>
> I need to use a piezo to trigger a bang in a pd patch but i am having some
> problem of inestability. I use the piezo like an analog input to arduino
> board, then comunicate with pduino ( firmata 2.1.) Once in the patch i use
> an arduino object to detect the signal from piezo and a threshold object to
> trigger a bang when the value of the signal goes up the threshold. The
> problem is the acuraccy of the sistem, because is really unprecise,
> sometimes trigger doestn work and some times trigger more bangs than hits to
> the piezzo.
> Anybody knows a efficient way to do this? how can i improve the accuracy?
>
> Thanks ¡¡
>
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