/******************************************
|     Temperature Monitoring System       |
|       using ESP32 Microcontroller       |
|     SUBMITTED BY: MAGAT, ANGELO G.      |
|  SUBMITTED TO: PROF. MICHAEL T. SAMONTE |
|*****************************************/

#include <DHT.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#define DHTPIN 4
#define DHTTYPE DHT22
#define LED1 18
#define LED2 19
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 4);
const int buzzerPin = 5;

void setup() 
{
lcd.init(); // initialize the LCD
lcd.backlight(); // turn on backlight
dht.begin(); // initialize DHT11 sensor

pinMode(buzzerPin, OUTPUT);
digitalWrite(buzzerPin, LOW);

pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
}

void loop() {
float temp = dht.readTemperature(); // read temperature data from DHT11
float hum = dht.readHumidity(); // read humidity data from DHT11
  
lcd.setCursor(0, 0);
lcd.print("|  Temp: ");
lcd.print(temp);
lcd.print(" C  |");
lcd.setCursor(0, 1);
lcd.print("| Humidity: ");
lcd.print(hum);
lcd.print(" %| ");
lcd.setCursor(0, 2);
lcd.print("|    Created By:   |");
lcd.setCursor(0, 3);
lcd.print("| -Angelo G. Magat-|");

  if (temp < 28.0) {
    digitalWrite(buzzerPin, HIGH); // Turn ON the buzzer
    digitalWrite(LED1, HIGH);     
    digitalWrite(LED2, LOW);
  } else {
    digitalWrite(buzzerPin, LOW);  // Turn OFF the buzzer
    digitalWrite(LED2, HIGH);
    digitalWrite(LED1, LOW);
 }
    delay(1000);
}