#include "DHT.h"
#define DHTPIN 2
#define DHTTYPE DHT22 // *DHT11
#define RED_LED 3
#define GREEN_LED 4
#define BLUE_LED 5

DHT dht(DHTPIN, DHTTYPE);

void setup() {
Serial.begin(9600);
dht.begin();
pinMode(RED_LED, OUTPUT);
pinMode(GREEN_LED, OUTPUT);
pinMode(BLUE_LED, OUTPUT);
}

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

if (isnan(temperature)) {
Serial.println("Failed to read from DHT sensor!");
return;
}

Serial.print("Temperature: ");
Serial.print(temperature);
Serial.println(" *C");

if (temperature > 30) {
digitalWrite(RED_LED, HIGH);
digitalWrite(GREEN_LED, LOW);
digitalWrite(BLUE_LED, LOW);
}
else if (temperature >= 25 && temperature <= 30) {
digitalWrite(RED_LED, LOW);
digitalWrite(GREEN_LED, HIGH);
digitalWrite(BLUE_LED, LOW);
}
else if (temperature < 25) {
digitalWrite(RED_LED, LOW);
digitalWrite(GREEN_LED, LOW);
digitalWrite(BLUE_LED, HIGH);
}

delay(2000);
}