#define trigPin 13          
#define echoPin 14          
#define MAX_DISTANCE 700    


float timeOut = MAX_DISTANCE * 58.8;  
int soundVelocity = 340;             

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

void loop() {
  delay(100);  

  
  Serial.printf("Distancia: ");
  Serial.print(getSonar() * 10); 
  Serial.print("mm");
  Serial.print("  |  ");

  Serial.print(getSonar());      
  Serial.print("cm");
  Serial.print("  |  ");

  Serial.print(getSonar() / 2.54); 
  Serial.print("in");
  Serial.print("  |  ");

  Serial.print(getSonar() * 100);  
  Serial.println("m");
}

float getSonar() {
  unsigned long pingTime;
  float distance;

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

  
  pingTime = pulseIn(echoPin, HIGH, timeOut);


  distance = (float)pingTime * soundVelocity / 2 / 10000; 

  return distance; 
}