#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
#define DHTPIN 12
#define DHTTYPE DHT22
DHT_Unified dht(DHTPIN, DHTTYPE);

void setup ()
{
  Serial.begin(9600);
  dht.begin();
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
}

void loop()
{
  delay(2000);
  sensors_event_t event;
  dht.temperature().getEvent(&event);
  if (isnan(event.temperature))
    {
    Serial.println("Error membaca suhu!");
   }
   else
   {
    float temperature = event.temperature;
    Serial.print("Suhu: ");
    Serial.print(temperature);
    Serial.println(" c ");
    if (temperature < 25)
    {
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    digitalWrite(5, LOW);
    }
    if (temperature >= 25 && temperature < 35)
    {
    digitalWrite(5, HIGH);
    digitalWrite(4, LOW);
    digitalWrite(3, LOW);
    tone(2,2000,500);
    }
    if (temperature >= 35 && temperature < 45)
    {
    digitalWrite(5, LOW);
    digitalWrite(4, HIGH);
    digitalWrite(3, LOW);
    tone(2,2000,500);
    }
    if (temperature >= 45)
    {
    digitalWrite(5, LOW);
    digitalWrite(4, LOW);
    digitalWrite(3, HIGH);
    tone(2,2000,500);
    }
    delay (100);
   }
}