Re: [PD] Re : piezo sensor to pduino object

2010-09-21 Thread Jose Luis Santorcuato
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 th

Re: [PD] Re : piezo sensor to pduino object

2010-09-20 Thread patrick
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 ___ P

Re: [PD] Re : piezo sensor to pduino object

2010-09-20 Thread Ricardo Lameiro
try to put some medium sized resistor in series with the piezo and see if it gets more tangible data input. Piezzos can output very high voltages. 2010/9/20 david lemarechal > Hi > > I think the easier way to get info from the piezo is to plug it in a sound > card preamp and then use [peakamp~ ]

[PD] Re : piezo sensor to pduino object

2010-09-20 Thread david lemarechal
Hi I think the easier way to get info from the piezo is to plug it in a sound card preamp and then use [peakamp~ ] Otherwise you should do a bit of electronics to transform the tiny AC voltage of the piezo output into a DC amplified voltage to match the analog input of arduino. You'll have t