#include "DHT.h"

#define DHT_pin 2  
#define Buzzer_pin 8
#define RED_pin 9
#define GREEN_pin 10
#define BLUE_pin 11
#define LED_pin 12

DHT dht(DHT_pin, DHT22);

void setup() {
  pinMode(Buzzer_pin, OUTPUT);
  pinMode(RED_pin, OUTPUT);
  pinMode(GREEN_pin, OUTPUT);
  pinMode(BLUE_pin, OUTPUT);
  pinMode(LED_pin, OUTPUT);
  dht.begin();
}

void loop() {
  delay(2000);
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  
  digitalWrite(RED_pin, LOW);
  digitalWrite(GREEN_pin, LOW);
  digitalWrite(BLUE_pin, LOW);
  digitalWrite(LED_pin, LOW);
  digitalWrite(Buzzer_pin, LOW);
  
  if(t < 0) {
    digitalWrite(BLUE_pin, HIGH);
    digitalWrite(Buzzer_pin, HIGH);
  }
  else if(t >= 0 && t <= 10) {
    digitalWrite(BLUE_pin, HIGH);
  }
  else if(t > 10 && t < 30) {
    digitalWrite(GREEN_pin, HIGH);
  }
  else if(t >= 30 && t <= 40) {
    digitalWrite(RED_pin, HIGH);
  }
  else if(t > 40) {
    digitalWrite(RED_pin, HIGH);
    digitalWrite(Buzzer_pin, HIGH);
  }
  else if(t > 70) {
    digitalWrite(LED_pin, HIGH);
    digitalWrite(Buzzer_pin, HIGH);
  }
}