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

#define DHTPIN 3
#define DHTTYPE DHT22  //declare type of dht sensor

int btn1 = 7; //pin number for button
int ld = 11; //pin number for LED
float threshold = 38.00; //temperature theshold
int timer = 200; //delay time

DHT el(DHTPIN, DHTTYPE);
Servo svo;  // create Servo object to control the servo

void setup() {
  pinMode(ld, OUTPUT); //initialising led as an output pin/device
  pinMode(btn1, INPUT); //initialising button as an input pin/device

  Serial.begin(9600);

  el.begin(); // start the communication between the sensor and the board
  svo.attach(5);
}

void loop() {
  float t = el.readTemperature(); //to read temp. from the sensor
  float h = el.readHumidity(); //to read the humidity fron sensor

  bool btnState = digitalRead(btn1); //read the state of the btn 

  if(btnState == true){
    svo.write(180); // move servo to 100 degrees

    digitalWrite(ld, HIGH); //turn on the LED

    Serial.print("temperature = ");
    Serial.print(t);
    Serial.println(".C");

    Serial.print("humidity = ");
    Serial.print(h);
    Serial.println("%");

    Serial.println("*******************************************");
    delay(1000);
  }else{
    digitalWrite(ld, LOW); // turn of the LED
    svo.write(0); // move servo to 0 degrees
  } 

  while(t > threshold){
    digitalWrite(ld, HIGH);
    delay(timer);
    digitalWrite(ld, LOW);
    delay(timer);
    Serial.println("Temperature is abnormally high");

    t = el.readTemperature(); 
  }








 /*  Serial.print("temperature = ");
  Serial.print(t);
  Serial.println(".C");
  Serial.print("humidity = ");
  Serial.print(h);
  Serial.println("%");
  delay(1000); */
  /* bool btnState = digitalRead(btn1);
  Serial.print("button signal= ");
  Serial.println(btnState); */
  
}