#include <Wire.h>
#include <LiquidCrystal_I2C.h>

int IRSensor_1 = 4,IRSensor_2 = 5,IRSensor_3 = 6; // connect IR sensor DO to arduino pin 2
int led_1 = 8,led_2=9,led_3=10; // connect LED to arduino pin 13 or monitor inbuilt LED
int c1 = 0,c2=0,c3=0;
int park_1=0,park_2=0,park_3=0;

LiquidCrystal_I2C lcd(0x27,16,2);
void setup()
{
 pinMode (IRSensor_1, INPUT); // sensor pin INPUT
 pinMode (IRSensor_2, INPUT); // sensor pin INPUT
 pinMode (IRSensor_3, INPUT); // sensor pin INPUT
 pinMode (led_1, OUTPUT); // LED pin OUTPUT
 pinMode (led_2, OUTPUT); // LED pin OUTPUT
 pinMode (led_3, OUTPUT); // LED pin OUTPUT
 
 lcd.begin(); //initailize the LCD
 lcd.backlight();
 lcd.print("Car Parking");
 delay(2000);
 lcd.clear();
 lcd.print("Total cars parked");
 lcd.setCursor(0,1);
 lcd.print("today");
 delay(2000);
}
void loop(){
  int statusSensor_1 = digitalRead (IRSensor_1);
  int statusSensor_2 = digitalRead (IRSensor_2);
  int statusSensor_3 = digitalRead (IRSensor_3);

  //For parking slot - 1
  if (statusSensor_1 == 0 && park_1 ==0){
    c1 +=1;
    park_1 = 1; 
  }
  else if (statusSensor_1 == 1) {
    park_1 =0;
    digitalWrite(led_1, LOW);
    }
  //For parking slot - 2
  if (statusSensor_2 == 0 && park_2 ==0){
    c1 +=1;
    park_2 = 1; 
  }
  else if (statusSensor_2 == 1) {
    park_2 =0;
    digitalWrite(led_2, LOW);
    }
  //For parking slot - 3
  if (statusSensor_3 == 0 && park_3 ==0){
    c1 +=1;
    park_3 = 1; 
  }
  else if (statusSensor_3 == 1) {
    park_3 =0;
    digitalWrite(led_3, LOW);
    }

  //For the LED indication
  if (park_1 == 1){
    digitalWrite(led_1, HIGH);
  }
  if (park_2 == 1){
    digitalWrite(led_2, HIGH);
  }
  if (park_3 == 1){
    digitalWrite(led_3, HIGH);
  }
  lcd.clear();
  lcd.print("Total :");
  lcd.setCursor(0,1);
  lcd.print(c1+c2+c3);
}