#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 mrmbaca suhu!");
}
  else
{
  float temperatur = event.temperature;
  Serial.println("suhu: ");
  Serial.println(temperatur);
 Serial.println(" c ");
  if (temperatur < 25)
  {
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(4, LOW);
    digitalWrite(5, LOW);
  }
  if (temperatur >= 25 && temperatur < 35)
{
  digitalWrite(5, HIGH);
  digitalWrite(4, LOW);
  digitalWrite(3, LOW);  
  tone(2,1000,500);
}
  if (temperatur >=35 && temperatur < 45)
  {
  digitalWrite(5, LOW);
  digitalWrite(4, HIGH);
  digitalWrite(3, LOW);  
  tone(2,1000,500);   
}
if (temperatur >= 45)
{
  digitalWrite(5, LOW);
  digitalWrite(4, LOW);
  digitalWrite(3, HIGH);  
  tone(2,1000,500);  
  }
  delay(100); 
}
}