#include "DHT.h"
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

#define DHTPin 2
#define ledPin 3
#define buzzerPin 4
#define flamePin 5

#define DHTTYPE DHT11
DHT dht(DHTPin, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  lcd.init();
  lcd.init();
  lcd.backlight();
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  pinMode(flamePin, INPUT);
  digitalWrite(ledPin, 0);
  digitalWrite(buzzerPin, 0);
  dht.begin();
}

void loop() {
  float t = dht.readTemperature();
  int f = digitalRead(flamePin);
  Serial.println(f);
  lcd.setCursor(0, 0);
  lcd.print("Temp:");
  lcd.setCursor(6, 0);
  lcd.print(t);
  lcd.setCursor(11, 0);
  lcd.print("'C");

  //1 = No Flame
  //0 = Flame Detected !!
  if (f == 0) {
    digitalWrite(ledPin, 1);
    digitalWrite(buzzerPin, 1);
    lcd.setCursor(0, 1);
    lcd.print("Flame Detected!!");
    delay(2000);
  }
  else {
    digitalWrite(ledPin, 0);
    digitalWrite(buzzerPin, 0);
    lcd.setCursor(0, 1);
    lcd.print("                ");
  }
}//end of Loop