// Define the pins for the ultrasonic sensor
 int trigPin = 2;
 int echoPin = 3;
int distance;
int duration;
void setup() {
  // Initialize Serial Communication
  Serial.begin(9600);

  // Set the trigPin as an OUTPUT and echoPin as an INPUT
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}

void loop() {
  // Send a short pulse to the ultrasonic sensor to trigger a reading
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  // Read the duration of the pulse from the echoPin
  long duration = pulseIn(echoPin, HIGH);

  // Calculate the distance in centimeters based on the speed of sound (343 meters/second)
  // Distance = (duration / 2) * speed of sound
  // Distance = (duration / 2) * 0.0343 (since speed of sound is approximately 343 meters/second)
 distance = (duration / 2) * 0.0343;

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

  // Wait for a short delay before taking the next reading
  delay(1000); // You can adjust the delay according to your requirement
}