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

#define DHTPIN 4           
#define DHTTYPE DHT22      

DHT dht(DHTPIN, DHTTYPE); 

LiquidCrystal_I2C lcd(0x27, 16, 2); 


void setup() {
  Serial.begin(115200);
  lcd.init();           
  lcd.backlight();    
  dht.begin();         
  lcd.setCursor(0, 0);
  pinMode(5, OUTPUT);
  pinMode(18, OUTPUT);
  lcd.begin(16,2); 
  Serial.begin(9600);
  dht.begin();
}

void loop() {

  float h = dht.readHumidity();
  float t = dht.readTemperature();
 
  int humidity = (int)h;
  int temperature = (int)t;

  Serial.print("hum = ");
  Serial.println(humidity);
  Serial.print("temp = ");
  Serial.println(temperature);
  
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(temperature);
  lcd.print(" C");

  lcd.setCursor(0, 1);
  lcd.print("Humidity: ");
  lcd.print(humidity);
  lcd.print(" %");
  if (humidity >= 70){
      digitalWrite(5, HIGH);
    } else{
      digitalWrite(5, LOW);
    }
     if (temperature >= 70){
      digitalWrite(18, HIGH);
    } else{
      digitalWrite(18, LOW);
    }
  delay(2000); 
}