int ms=2;
int led=9;
int buzz=11;
void setup() {
Serial.begin(9600);
pinMode(ms, INPUT);
pinMode(led, OUTPUT);
pinMode(buzz, OUTPUT);
}
void loop() {
int msig=digitalRead(ms);
if (msig==HIGH)
{
Serial.println("motion detected");
digitalWrite(led, HIGH);
tone(buzz,1000);
delay(2000);
}else{
Serial.println("motion detected");
digitalWrite(led , LOW);
}
}