//program to interface Arduin- Buzzer with LDP and LED//
int ledPin=5;
int buzzerPin=12;
int ldrPin=A0;
void setup() {
Serial.begin(9600);
pinMode(5, OUTPUT);
pinMode(12, INPUT);
pinMode(A0, INPUT);
}
void loop() {
int ldrStatus=analogRead(A0);
if(ldrStatus>=400){
tone(12,100);
digitalWrite(5, HIGH);
delay(100);
noTone(12);
digitalWrite(5, LOW);
delay(100);
Serial.println("ALARAM ACTIVATED");
}
else{
noTone(12);
digitalWrite(12, LOW);
Serial.println("ALARAM DEACTIVATED");
}
}