#include "LiquidCrystal.h"  
#include <Servo.h>
Servo myservo;
 LiquidCrystal lcd(5,6,7,8,9,10);  
 int irPin=2;  
 int count=0;  
 boolean state = true;  
 const int trigPin = 3;
 const int echoPin = 4;
 long duration;
 long distance;
 void setup()  
 {  
  Serial.begin(9600);  
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  myservo.attach (11);
  lcd.begin(16,2);  
  pinMode(irPin, INPUT);  
  lcd.setCursor(0,0);  
  lcd.print(" PINTU OTOMATIS ");
    lcd.clear();
  lcd.setCursor(0,1);  
  lcd.print("Count No : "); 

 }  
 void loop()  
 {  
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance = duration*0.034/2;

  if(distance <= 40 ){
    lcd.setCursor(0, 0);
    myservo.write(90);
    lcd.print("Pintu Terbuka");

     if (!digitalRead(irPin) && state){  
      count++;  
      state = false;  
      Serial.print("Count: ");  
      Serial.println(count);  
      lcd.setCursor(12,1);  
      lcd.print(count);  
      delay(100);  
      }  
      if (digitalRead(irPin)){  
      state = true;  
      delay(100);  
      }
  }
  else{
    lcd.setCursor(0, 0);
    myservo.write(0);
    lcd.print("Pintu Tertutup");

  }
  
 }