#include <DHT.h>
#include <Servo.h>

#define DHTPIN 4
#define DHTTYPE DHT22
int SERVO = 3;

DHT dht(DHTPIN, DHTTYPE);
Servo servo;

int pos = 0;

void setup() {
  Serial.begin(38400); // Initialize the serial port
  dht.begin();
  servo.attach(SERVO);
  delay(2000);
}

void loop() {
  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();

  // Check if any reads failed and exit early (to try again).
  if (isnan(h)) {
    Serial.println("Failed to read from DHT22 sensor!");
    return;
  }

  if (h <= 40) {
    Serial.print("Start Humidifier");
    Serial.print(" \t\t");

    Serial.print(h); 
    Serial.print(" %\t");

    servo.write(180);

    delay(6000);

    servo.write(0);

    Serial.print("Stop Humidifier");
    Serial.print(" \t");
  }

  // Wait a few seconds between measurements. The DHT22 should not be read at a higher frequency of
  // about once every 2 seconds. So we add a 3 second delay to cover this.
  delay(3000);
}