// Define constants for the ultrasonic sensor
const int trigPin = 10;
const int echoPin = 11;

// Define variables
long duration;
int distance;

void setup() {
  // Initialize the serial communication
  Serial.begin(9600);

  // Set ultrasonic sensor pins as OUTPUT and INPUT
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}

void loop() {
  // Measure distance using the ultrasonic sensor
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034 / 2;

  // Print the distance to the Serial Monitor
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");

  // Add a delay to avoid flooding the Serial Monitor
  delay(500);
}