#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <ESP32Servo.h> 
#include <WiFi.h>
#include "ThingSpeak.h"

//used Pins
#define DHTPIN 15
int BuzzerPin = 33;
Servo myservo;// servo onject
float temperature;

//the sensor
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
// the LCD
LiquidCrystal_I2C lcd(0x27, 16, 2);
int ON = 0;
int OFF = 90;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  myservo.attach(4);
  dht.begin();
  pinMode(BuzzerPin, OUTPUT);
  lcd.init();
  lcd.backlight();

}

void loop() {

  float temperature = dht.readTemperature();
  Serial.println("Temprature is:");
  Serial.println(temperature);

  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(temperature);
  lcd.print(" C");

  if (temperature >= 40){
 myservo.write(ON); // turn FAN ON
 digitalWrite(BuzzerPin, HIGH); 
 }
 else if (temperature < 40){
 myservo.write(OFF); // turn FAN OFF
 digitalWrite(BuzzerPin, LOW);
 }

}