int pir=12;
int buzzpin=11;
void setup() {
pinMode(pir, INPUT);
pinMode(buzzpin, OUTPUT);
// put your setup code here, to run once:
}
void loop() {
int value_of_pir = digitalRead(pir);
if(value_of_pir == HIGH)
{
tone(buzzpin,500,3);
}
else
{
tone(buzzpin,0,1);
}
// put your main code here, to run repeatedly:
}