#include <LiquidCrystal.h>
#include <DHT.h>


#define DHTPIN 8         
#define DHTTYPE DHT22    
#define RS_PIN 7         
#define E_PIN 6          
#define D4_PIN 5         
#define D5_PIN 4         
#define D6_PIN 3         
#define D7_PIN 2         


#define RED_LED 10       
#define GREEN_LED 11     
#define BLUE_LED 12      


DHT dht(DHTPIN, DHTTYPE);


LiquidCrystal lcd(RS_PIN, E_PIN, D4_PIN, D5_PIN, D6_PIN, D7_PIN);

void setup() 
{
  Serial.begin(9600);
  dht.begin();

  lcd.begin(16, 2);

  lcd.print("Initializing...");
    delay(500);
    lcd.clear();

  
  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(" %\t Temperature: ");
  Serial.println(temperature);

  
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(temperature);
  lcd.print(" C");
  
  
  if (temperature > 30) 
  {
    digitalWrite(RED_LED, LOW);
    digitalWrite(GREEN_LED, LOW);
    digitalWrite(BLUE_LED, HIGH);
  } else if (temperature >= 30 && temperature <= 60) 
  {
    digitalWrite(RED_LED, LOW);
    digitalWrite(GREEN_LED, HIGH);
    digitalWrite(BLUE_LED, LOW);
  } else if (temperature > 60) 
  {
    digitalWrite(RED_LED, HIGH);
    digitalWrite(GREEN_LED, LOW);
    digitalWrite(BLUE_LED, LOW);
  }

  
  delay(2500);
}