#define trigo 6 
#define echo 5
int distance =0;
int t=0; 
void setup() {
  
  Serial.begin(9600);
  pinMode(trigo , OUTPUT); 
  pinMode(echo , OUTPUT);  

  }

  void loop() {
    
    digitalWrite(trigo , LOW );
    delayMicroseconds(5);
    digitalWrite(trigo , HIGH);
    delayMicroseconds(10);
    digitalWrite(trigo , HIGH);
    t=pulseIn(echo , HIGH);
    distance =t/57;
    Serial.println(distance);
    delay(500);      
    }