const int trigPin = 27;
const int echoPin = 26;

#define SOUND_VELOCITY 0.034
#define CM_TO_INCH 0.393701

long duration;
float distance;
float distanceCm;
float distanceInch;

void setup(){
  Serial.begin(115200);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  }

void loop(){
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);

  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  
  duration = pulseIn(echoPin, HIGH);
  distance = duration*SOUND_VELOCITY/2;

  distanceInch = distanceCm * CM_TO_INCH;


  Serial.print("Distance (cm):");
  Serial.print(distanceCm);

  Serial.print("Distance (inch):");
  Serial.print(distanceInch);

  delay(1000);
  }