#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);



int   Contrast = 25;
#define in 2 // ir digital input

#define relay 3// uv light

#define red 5 // red
#define blue 6// green
#define buzz 7//buzzer

int count=10;

void IN()
{
  
    count--;
    lcd.clear();
     lcd.setCursor(0,0);
      lcd.print("TotalS-Cover:25");
       lcd.setCursor(0,1);
    lcd.print("S-cover used:");
   lcd.print(count);
    delay(1000);
}



void setup()
{
  analogWrite(6,   Contrast);
  lcd.init();                      
  lcd.init();
  lcd.backlight();
  lcd.setCursor(2,0);
  lcd.print(" Shoe S.P.A  ");
   lcd.setCursor(4,1);
lcd.print("System");
  delay(2000);

  pinMode(red, OUTPUT);
  pinMode(blue, OUTPUT);
   pinMode(in, INPUT);
  pinMode(relay, OUTPUT);
  pinMode(buzz,OUTPUT);

}
void loop()
{  
  
  if(digitalRead(in)){
   IN();
       digitalWrite(blue,HIGH);
       digitalWrite(red,LOW);
       digitalWrite(buzz,LOW);
    digitalWrite(relay, HIGH);
    delay(3000);
    digitalWrite(relay,LOW);
  lcd.clear();
lcd.setCursor (1,0);
lcd.print("Please remove");
delay(2000);
lcd.clear();
pasok(); 
 
  }if(count>=1 && count <=5){

       digitalWrite(red,HIGH);
       delay(500);
       digitalWrite(red,LOW);
       delay(500);
        digitalWrite(red,HIGH);
       delay(500);
        digitalWrite(red,LOW);
    lcd.clear();
lcd.setCursor(1,0);
lcd.print("WARNING S-COVER");
lcd.setCursor(0,1);
lcd.print("IS GETTING EMPTY");
delay(2000);
pasok();

  
  
  }else if(count==0){
     digitalWrite(blue,LOW);
       digitalWrite(red,HIGH);
        digitalWrite(buzz,HIGH);
        delay(500);
       digitalWrite(buzz,LOW);
       delay(500);
       digitalWrite(buzz,HIGH);
        delay(500);
         digitalWrite(buzz,LOW);
    lcd.clear();
lcd.setCursor(4,0);
lcd.print("WARNING");
lcd.setCursor(0,1);
lcd.print("S-COVER IS EMPTY");
delay(2000);
 
 lcd.clear();
lcd.setCursor(1,0);
lcd.print("Please wait to");
lcd.setCursor(0,1);
lcd.print("AuthorizedPersonnel");
delay(2000);


  }


  }

void pasok(){

lcd.clear();
     lcd.setCursor(0,0);
      lcd.print("TotalS-Cover:25");
       lcd.setCursor(0,1);
    lcd.print("S-cover used:");
   
    lcd.print(count);
    delay(1000);

}