int sensorPin = 2;    // PIR motion sensor input pin
int speakerPin = 8;   // Speaker or buzzer output pin
int state = LOW;      // Current state of the motion sensor

void setup() {
  Serial.begin(9600); // Initialize serial communication
  pinMode(sensorPin, INPUT);
  pinMode(speakerPin, OUTPUT);
}

void loop() {
  state = digitalRead(sensorPin);
  if (state == HIGH) {
    Serial.println("Motion detected!");
    tone(speakerPin, 1000, 500);
  } else {
    Serial.println("No motion detected");
    noTone(speakerPin);
  }
  delay(100);
}