// include the library code:
#include <LiquidCrystal.h>

#define echoPin 15
#define pir 1
#define buzzer 16

#define trigPin 14
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);


 

long duration;

int distance;

 

void setup()

{

  pinMode(trigPin, OUTPUT);

  pinMode(echoPin, INPUT);
  pinMode(pir, INPUT);
  pinMode(buzzer, OUTPUT);
  lcd.begin(16, 2);
  // Print a message to the LCD.
   Serial.begin(9600);  
   
  
}

   
 
  void loop()

{
  digitalWrite(trigPin, LOW);
  

  delayMicroseconds(2);


  digitalWrite(trigPin, HIGH);

  delayMicroseconds(10);

  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);

  distance = duration * 0.034 / 2;

  Serial.print("Distance: ");
  lcd.print(distance);
  lcd.print(millis() / 1000);

  digitalWrite(trigPin, LOW);
   

  
  









 
   

  
  

}