#include <OneWire.h>
#include <DallasTemperature.h>
byte red_led=11;
byte green_led=10;
byte blue_led=9;

OneWire oneWire(8);
DallasTemperature sensor(&oneWire);

void setup(void) {
  Serial.begin(115200);
  delay(2);
  sensor.begin();
  delay(20);
  
  pinMode(red_led, OUTPUT);
  pinMode(green_led, OUTPUT);
  pinMode(blue_led, OUTPUT);
}

void loop(void) {
  sensor.requestTemperatures();
  Serial.print("Temperature is: ");
  delay(10);
  Serial.println(sensor.getTempCByIndex(0));
  delay(1000);
  if (sensor.getTempCByIndex(0)<20) {
      digitalWrite(10,HIGH);
      digitalWrite(11,LOW);
  } else {
  digitalWrite(10,LOW);
  digitalWrite(11,HIGH);
}
 delay(1000);
}