#include <LiquidCrystal_I2C.h>
#include <Wire.h>
#include <DHT.h>
#define DHTPIN 2
#define DHTTYPE DHT22
LiquidCrystal_I2C lcd(0x27, 16, 2);
DHT dht(DHTPIN , DHTTYPE);

void setup() {
  lcd.init();
  dht.begin();
  pinMode(3 , OUTPUT);
  pinMode(4 , OUTPUT);
}

void loop() {
  int h,t;
  h= dht.readHumidity();
  t = dht.readTemperature();
  lcd.setCursor(0,0);
  lcd.print("Temp = ");
  lcd.print(t);
  lcd.setCursor(0,1);
  lcd.print("Humidity = ");
  lcd.print(h);
  if( t > 30){
    digitalWrite(3 , HIGH);
    digitalWrite(4 , LOW);
  }
  else { 
    digitalWrite(3, LOW);
    digitalWrite(4, HIGH);
  }
}