#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,16,2);

#define motor 2
#define line 3
#define tank 4

int count=10;

void setup() 
{
    lcd.begin(16,2);
    lcd.backlight();
    
    pinMode(motor, OUTPUT);
    pinMode(line, INPUT_PULLUP);
    pinMode(tank, INPUT_PULLUP);
   // attachInterrupt(digitalPinToInterrupt(line), lcdClear, CHANGE);
   if(digitalRead(line)==1)
   {
      digitalWrite(motor, LOW);
      lcd.setCursor(0,0);
      lcd.print("Motor OFF    ");
   }
   else
   {
      digitalWrite(motor, HIGH);
      lcd.setCursor(0,0);
      lcd.print("Motor ON    ");
   } 
}

void loop() 
{
   if(digitalRead(tank)==0)
   {
      digitalWrite(motor, LOW);
      lcd.setCursor(0,0);
      lcd.print("Motor OFF");
      lcd.setCursor(0,1);
      lcd.print("Tank Full      ");
   }
   else
   {
      count--;
      delay(1000);
      lcd.setCursor(0,1);
      lcd.print("Time Left: ");
      lcd.print(count);
      if(count<1)
      {
        if(digitalRead(line)==0)
        {
          digitalWrite(motor, HIGH);
          lcd.setCursor(0,0);
          lcd.print("Motor ON    ");
        }
        else
        {
          digitalWrite(motor, LOW);
          lcd.setCursor(0,0);
          lcd.print("Motor OFF    ");
        }
        count=10;
        
      }
      
      if(digitalRead(line)==1)
      {
          digitalWrite(motor, LOW);
          lcd.setCursor(0,0);
          lcd.print("Motor OFF    ");
        
      }
      
   }
}