Arduino Gas leakage sensor with LCD display

Arduino Gas leakage sensor with LCD display

Parts list:
Arduino board
LCD display 16x2
Buzzer
Resistor 220 ohm 
MQ-2 gas sensor module 
Potentiometer 1K
Connecting wires
Breadboard



Arduino Gas leakage sensor with LCD display

Arduino Gas leakage sensor with LCD display


Arduino Gas leakage sensor with LCD display 
 
Video: 



Code:
 
#include <LiquidCrystal.h>

LiquidCrystal lcd(7, 8, 9, 10, 11, 12);


int potPin = A4;

int potValue = 0;

int buzzer = 6;


void setup() {

    lcd.begin(16, 2); // lcd rows and columns

    lcd.print("GAS SENSOR");

    pinMode(6, OUTPUT);


}


void loop() {

    potValue = analogRead(potPin);

 

    lcd.setCursor(0, 1);

    lcd.print("Value = ");

    lcd.print(potValue);

    delay(1000);

    lcd.print(" ");

    delay(1);


if (potValue>15)

{

    digitalWrite(6,HIGH);

    delay(1000);

  }

}