Ultrasonic sensor

https://imgur.com/a/TWiO6FY


// Define the pins for the ultrasonic sensor
const int trigPin = 9; // Arduino digital pin for the trigger
const int echoPin = 10; // Arduino digital pin for the echo


// Variables to store the duration and distance
long duration;
int distance;
void setup()
{
  // Initialize serial communication for debugging
  Serial.begin(9600);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}
void loop()
{
  // Trigger a pulse to the sensor
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  // Measure the duration of the pulse from the echo
  duration = pulseIn(echoPin, HIGH);
  // Calculate the distance based on the speed of sound
  distance = duration * 0.034 / 2; // Divide by 2 because the sound travels to the object and back
                                   // Print the distance to the serial monitor
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
  // Add a delay between measurements
  delay(1000); // 1 second
}