#define TRIG_PIN 14   
#define ECHO_PIN 27  

void setup() {
  Serial.begin(115200);  
  pinMode(TRIG_PIN, OUTPUT); // Set TRIG pin as output
  pinMode(ECHO_PIN, INPUT);  // Set ECHO pin as input
}

void loop() {

  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  

  long duration = pulseIn(ECHO_PIN, HIGH);

  float distance = duration * 0.034 / 2;

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

  delay(500);  
}