photocells

[andnobre]

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.