#include <DHT.h>

#define DHTPIN 2
#define pinRojo 11
#define pinVerde 10
#define pinAzul 9
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

void setup() {
  pinMode(pinRojo, OUTPUT);
  pinMode(pinVerde, OUTPUT);
  pinMode(pinAzul, OUTPUT);
  dht.begin();
}

void loop() {
  float temperatura = dht.readTemperature();

  if (!isnan(temperatura)) {
    int valorLED = map(temperatura, -40, 80, 0, 225);

    if (temperatura <= -40) {
      analogWrite(pinRojo, 0);
      analogWrite(pinVerde, 0);
      analogWrite(pinAzul, 225);
    } else if (temperatura >= 80) {
      analogWrite(pinRojo, 255);
      analogWrite(pinVerde, 0);
      analogWrite(pinAzul, 0);
    } else {
      analogWrite(pinRojo, valorLED);
      analogWrite(pinVerde, 0);
      analogWrite(pinAzul, 255 - valorLED);
    }
  }

  delay(2000);
}