// Define the trigger and echo pins
int trigPin = 9;
int echoPin = 10;

void setup() {
  // Initialize serial communication
  Serial.begin(9600);
  
  // Define pin modes
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}

void loop() {
  // Clear the trigger pin
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  
  // Set the trigger pin high for 10 microseconds
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  
  // Read the echo pin and calculate the duration
  long duration = pulseIn(echoPin, HIGH);
  
  // Calculate the distance in cm
  int distance = duration * 0.03428 / 2;
  
  // Print the distance to the Serial Plotter
  Serial.println(distance);
  
  // Wait before next loop
  delay(100);
}