//#include <LiquidCrystal.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
#include <DHT.h>
#define dht_type DHT22
#define dht_pin 8
DHT dht(dht_pin,dht_type); // include dht sensor library
//LiquidCrystal lcd(10, 9, 5, 4, 3, 2);
dht  DHT;
float t=0;
float h=0;
//#define DHT11_PIN 8
#define MQ3_PIN A0
int gas_read = 0;
void setup() 

{                
Serial.begin(9600);
lcd.begin(16,2);
dht.begin();
 pinMode(MQ3_PIN, INPUT);
 lcd.init();
lcd.backlight();
lcd.setCursor(1,0);

  lcd.print("**SmarT FooD**");

  lcd.setCursor(3,1);

  lcd.print("MonitorinG");

  Serial.begin(9600);
  
 }
void loop()
{
  lcd.clear();
 lcd.setCursor(0,1);
  lcd.print("MQ3-");
gas_read = analogRead(MQ3_PIN);
  lcd.setCursor(4,1);
  lcd.print(gas_read);

 //int chk = DHT.read11(DHT11_PIN);
 Serial.print("Temperature = ");
  t = DHT.temperature;
 lcd.setCursor(8,0);
 lcd.print("Tem-");
lcd.setCursor(12,0);
 lcd.print(t);
Serial.println(t);
Serial.print("Humidity = ");
h = DHT.humidity;
lcd.setCursor(8,1);
 lcd.print("Hum-");
 lcd.setCursor(12,1);
 lcd.print(h);
 Serial.println(h);
}
}