#include "DHT.h"

#define DHTPIN 4
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);

byte red = 9, orange = 10, yellow = 11, cyan = 12, blue = 13;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  dht.begin();
  pinMode(red, OUTPUT);
  pinMode(orange, OUTPUT);
  pinMode(yellow, OUTPUT);
  pinMode(cyan, OUTPUT);
  pinMode(blue, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  float t = dht.readTemperature();
  float h = dht.readHumidity();

  if (isnan(h) || isnan(t)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  Serial.print(F("Humidity : "));
  Serial.print(h);
  Serial.print(F("% Temperature :"));
  Serial.print(t);
  Serial.println(F("°C"));
  delay(2000);

  if (t <= 80 && t >= 60) {
    digitalWrite(red, HIGH);
    digitalWrite(orange, LOW);
    digitalWrite(yellow, LOW);
    digitalWrite(cyan, LOW);
    digitalWrite(blue, LOW);
    delay(2000);
  } else if (t <= 59  && t >= 40) {
    digitalWrite(red, LOW);
    digitalWrite(orange, HIGH);
    digitalWrite(yellow, LOW);
    digitalWrite(cyan, LOW);
    digitalWrite(blue, LOW);
    delay(2000);
  } else if (t <= 39 && t >= 20) {
    digitalWrite(red, LOW);
    digitalWrite(orange, LOW);
    digitalWrite(yellow, HIGH);
    digitalWrite(cyan, LOW);
    digitalWrite(blue, LOW);
    delay(2000);
  } else if (t <= 19 && t >= 0) {
      digitalWrite(red, LOW);
      digitalWrite(orange, LOW);
      digitalWrite(yellow, LOW);
      digitalWrite(cyan, HIGH);
      digitalWrite(blue, LOW);
    } else if(t = -1 && t >= -20) {
        digitalWrite(red, LOW);
        digitalWrite(orange, LOW);
        digitalWrite(yellow, LOW);
        digitalWrite(cyan, LOW);
        digitalWrite(blue, HIGH);
        delay(2000);
      }

    }