#include <OneWire.h>
#include <DallasTemperature.h>

const int PIN_DQ = 4;
const int f=12;
const int h=13;
const int c=14;
OneWire oneWire(PIN_DQ);
DallasTemperature sensor(&oneWire);

void setup(void) {
  Serial.begin(115200);
  delay(2);
  sensor.begin();
  delay(20);
  pinMode(f, OUTPUT);
  pinMode(h, OUTPUT);
  pinMode(c, OUTPUT);
}

void loop(void) {
  
  sensor.requestTemperatures();
  Serial.print("Temperature is: ");
  delay(10);
  Serial.println(sensor.getTempCByIndex(0));
  delay(1000);
  if(sensor.getTempCByIndex(0)<25)
  {
    digitalWrite(f, HIGH);
    digitalWrite(h, HIGH);
  }
  if(sensor.getTempCByIndex(0)>25&sensor.getTempCByIndex(0)<27)
  {
    digitalWrite(f, LOW);
    digitalWrite(h, LOW);
    digitalWrite(c, LOW);
  }
  if(sensor.getTempCByIndex(0)>27)
  {
    digitalWrite(f, HIGH);
    digitalWrite(c, HIGH);
  }
}