//Libraries
#include "Servo.h"
#include "DHT.h"

Servo myservo; // create a servo object
#define servoPin 4 // define the servo pin

#define DHTPIN 7 // Pin connected to the DHT sensor
#define DHTTYPE DHT22 // DHT 22 (AM2302)

DHT dht(DHTPIN, DHTTYPE); // Initialize DHT sensor

float hum;  // Stores humidity value
float temp; // Stores temperature value

void setup() {
  Serial.begin(9600);
  dht.begin(); // initialize the sensor
  myservo.attach(servoPin); // Initialize the servo
}

bool printedHeader = false; // Flag to check if header has been printed

void loop() {
  hum = dht.readHumidity(); // Read humidity
  temp = dht.readTemperature(); // Read temperature

  // Check for failed sensor read and handle it
  if (isnan(hum) || isnan(temp)) {
    Serial.println("Failed to read from DHT sensor!");
  } 
  else {
    // Print to Serial Monitor
    if (!printedHeader) {
      Serial.println("Humidity,Temperature");
      printedHeader = true;
    }
    Serial.print(hum);
    Serial.print(",");
    Serial.println(temp);

  }
  


  // Rotate the servo under certain conditions
  if (temp > 20){
    myservo.write(90); // set servo angle to 90
  }
  else if (temp > 15){
    myservo.write(180); // set servo angle to 180
  }
  else{
    myservo.write(0); // set servo angle to 0
  }

  delay(2000); // delay between reads
}