#define pirPin 3
int pirState = LOW;
#define trigPin 9
#define echoPin 10
#define ledPin 13

void setup() {
  Serial.begin(9600);
  pinMode(pirPin, INPUT);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  pinMode(ledPin, OUTPUT);
  digitalWrite(ledPin, LOW);
}

void loop() {
  int pirVal = digitalRead(pirPin);
  if (pirVal == HIGH) {
    if (pirState == LOW) {
      Serial.println("Motion detected");
      digitalWrite(ledPin, HIGH);
      pirState = HIGH;
    }
  long duration, distance;
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.0343 / 2;

  Serial.print("Distance to object: ");
  Serial.print(distance);
  Serial.println(" cm");
  } else {
    if (pirState == HIGH)
      Serial.println("Motion detected");
      digitalWrite(ledPin, LOW);
      pirState = LOW;
  }
delay(200);
}