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[on:]

I'm trying to get a sound sensor to control a servo or motor they way a potentiometer would.  The problem is that the sound sensor hiccups a value to zero about every third millisecond or so, no matter the input.  This sends the servo wiggy.  I used a modified version of the smoothing example, but that cuts my highest results in half, and the thing is still kinda jittery.  All I want to do is to have the Arduino ignore a reading of 0.  I'm just not sure how to do that.  Please help.

[Reply #1 on:]

Well presumably at present you do something with the readings. So just don't do that something with a 0 reading.

if (getReading() != 0) {
   doSomething();
}

______
Rob

[Reply #2 on:]

Perfect! Thanks for the help.

[Reply #3 on:]

to generalize AWOL's solution :

#define MINIMUMSIGNAL 3

if (getReading() >= MINIMUMSIGNAL)
{
   doSomething();
}

furthermore instead of averaging you could use the median - http://arduino.cc/playground/Main/RunningMedian - to prevent spikes