#include <LiquidCrystal.h>
int rs = 7;
int en = 8;
int d4 = 9;
int d5 = 10;
int d6 = 11;
int d7 = 12;

int echo = 3;
int trig = 2;
float time;
float act;
float dist;
float speed = 330;
int status=0;

LiquidCrystal lcd (rs, en, d4, d5, d6, d7);

void setup() {
  lcd.begin(16, 2);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  Serial.begin(9600);

  pinMode(13, INPUT);

}

void loop() {
  status = digitalRead(13);
  Serial.println(status);

if (status==0){
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);


  digitalWrite(trig, LOW);
  delayMicroseconds(10);


  digitalWrite(trig, HIGH);

  time = pulseIn(echo, HIGH);
  act = time / 2;
  dist = 0.03422 * act;

  lcd.setCursor(5, 0);
  lcd.print("Distance = ");


  lcd.setCursor(0, 1);
  lcd.print(dist);
  lcd.print(" cm");

  //delay(500);
}
else{}


}