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

#define DHTPIN 21
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int led1Pin = 13;
const int led2Pin = 12;

void setup() {
  Serial.begin(9600);
  lcd.begin(16, 2);

  pinMode(led1Pin, OUTPUT);
  pinMode(led2Pin, OUTPUT);
}

void loop() {
  delay(2000);

  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  lcd.clear();
  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(" %");

  // LED1 sıcaklık 38-42 derece ve nem 55-60 aralığında sönük, aksi halde yanık
  if ((temperature >= 38 && temperature <= 42) && (humidity >= 55 && humidity <= 60)) {
    digitalWrite(led1Pin, LOW);
  } else {
    digitalWrite(led1Pin, HIGH);
  }

  // LED2 sıcaklık 38 derece altına düşerse yanık, aksi halde söndür
  if (temperature < 38) {
    digitalWrite(led2Pin, HIGH);
  } else {
    digitalWrite(led2Pin, LOW);
  }
}