#include <LiquidCrystal.h>
#include <DHT.h>
#define DHTPIN 2//PINO ANALÓGICO UTILIZADO PELO DHT11
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
int led1 = 9;
int led2 = 10;
int led3 = 11;
const int rs = 3, en = 4, d4 = 5, d5 = 6, d6 = 7, d7 = 8;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup(){
  Serial.begin(9600); //INICIALIZA A SERIAL
  dht.begin();
  lcd.begin(16, 2);
  lcd.clear();
  lcd.setCursor(0, 1); //INTERVALO DE 2 SEGUNDO ANTES DE INICIAR
}

void loop(){

delay(2000);

  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  // Read temperature as Fahrenheit (isFahrenheit = true)
  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  // Compute heat index in Fahrenheit (the default)
  float hif = dht.computeHeatIndex(f, h);
  // Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);

 if (t>10) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, LOW);
    digitalWrite(led3, LOW);
  }
  if (t>15) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, LOW);
  }
  if (t>20) {
    digitalWrite(led1, HIGH);
    digitalWrite(led2, HIGH);
    digitalWrite(led3, HIGH);
  }
  Serial.print(F("Temperature: "));
  Serial.print(t);
  Serial.println(F("°C "));
  Serial.print(F("Heat index: "));
  Serial.print(hic);
  Serial.println(F("°C "));
  lcd.setCursor(0, 0);
  lcd.print(F("Temp:"));
  lcd.print(t);
  lcd.print(F("C"));
  lcd.setCursor(0, 1);
  lcd.print(F ("HeatIndex:"));
  lcd.print(hic);
  lcd.print(F("C"));
  delay(2500);
  lcd.clear();
}