aqui esta bons projectos com LDRS-photocells
Código: [Seleccione]
int photosensorPin = 0;
int piezoPin = 9;
int val = 0;
void setup() {
pinMode(piezoPin, OUTPUT);
}
void loop() {
digitalWrite(piezoPin, LOW);
val = analogRead(photosensorPin);
val = val/2;
for( int i=0; i<500; i++ ) { // play it for 50 cycles
digitalWrite(piezoPin, HIGH);
delayMicroseconds(val);
digitalWrite(piezoPin, LOW);
delayMicroseconds(val);
}
}
http://www.ladyada.net/learn/sensors/cds.html
um bom exemplo:
http://www.adafruit.com/blog/2009/05/19/piezo-with-an-arduino-photoresistor/
o video nao consegui colocar.
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