#include <LiquidCrystal_I2C.h>
#include <dht.h>
dht DHT ;

#define DHT22_PIN 11

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

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

#define led1 8
#define led2 9
#define led3 10


void setup() {
  
 

  lcd.init();
  lcd.backlight();
  lcd.begin(16, 2);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
 
 
 

}

void loop() {

   int readData = DHT.read22(11); // Reads the data from the sensor
  float f = DHT.temperature; 

 lcd.setCursor(1, 0);
   lcd.print("Temp : ");

  lcd.setCursor(1, 1);
   lcd.print("FAN : ");

   lcd.setCursor(8, 0);
   lcd.print(f);
   delay(1000);
  

   

  if(f<20){
    lcd.clear();
    lcd.setCursor(8, 1);
   lcd.print("OFF");
    digitalWrite(led1, LOW);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  
  }

  else if(f>20& f<=25){
    lcd.clear();
    lcd.setCursor(8, 1);
   lcd.print("ON_1");
  digitalWrite(led1, HIGH);
  digitalWrite(led2, LOW);
  digitalWrite(led3, LOW);
  }

else if(f>26& f<=30){
  lcd.clear();
    lcd.setCursor(8, 1);
   lcd.print("ON_2");
  digitalWrite(led2, HIGH);
  digitalWrite(led3, LOW);
  digitalWrite(led1, LOW);
  }

  else if(f>30){
  lcd.clear();
    lcd.setCursor(8, 1);
   lcd.print("ON_3");
  digitalWrite(led3, HIGH);
  digitalWrite(led2, LOW);
  digitalWrite(led1, LOW);
  }


}