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 patrick <puredata@11h11.com>

hi,

what's is your circuit, you can filter a bit the hardware, see:
http://www.workinprogress.ca/projects/edubeat/source/

for an example, but in your case if you want only a trig (not velocity) you can remove the lp filter (C1-R1).

cheers
pat

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