How to interface MQ-2 Gas Sensor with Arduino Uno (with Code and Library)

#Arduino​ #Smoke​ #Detector​

What is a Gas Sensor?
They are electronic devices that detect and identify different types of gasses. They are commonly used to detect toxic or explosive gasses and measure gas concentration.

In this project, I have interfaced a Gas Sensor with Arduino that displays the contents of various gases in the atmosphere. The MQ-2 Gas Sensor can detect a list of Gases along with Smoke.
So incase you are looking out for a smoke detector, you can modify the same program for smoke detection.

Components List:

MQ-2 Sensor Code and Libraries :

Library

Background Music
- Lichu - Island

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#GasSensor​​ #Arduino​#SmokeDetector​#Gases​

[shramiksalgaonkar]

One of the most detailed video on youtube. Great work sir...

[denzilpillay]

I am using this video as part of my project and when you listed all the materials I bought them, you mentioned that we should but Male to Female but went on to use Male to Male.

[satishmohitsatish]

Sir how to connect alarm in this project if lpg or another harmful gas leakage happened

[bhaskarg]

Better if you also explain the code logic with respective to the components assembled to Arduino, Thank you

[shashanktg]

i did the same way as shown it turned on as it was to be but there is no reading on the lcd what is the problem

[ayushtiwari]

Bro I want to add gsm module in it also how may I do that
reply

[akshaypatil]

Can we used multiple gas detector sensor

[muhammadnawzad]

Hi i have some question
1- for the measurement how to calibrate it ?
2- what is the range that read for LPG in PPM ? Maximum & Minimum?

[Arman-vfi]

Broh! At 3:25 uh said to connect A0 to Analog Pin 0 on Arduino, but uh connected GND to A0 .Can uh plzz tell me which is correct??

[ELECTRICIAN]

How to convert sensor output 4-20mA connect to the plc

[johnpatrickabsalon]

what type of Arduino is this? can i use arduino uno r3 DIP?

[trinican]

I enjoyed your tutorial but I have two questions. 1. Does the MQ2 library automatically includes the calibration in gas type and ppm ? 2. I would like to do the same with an MQ9 to measure natural gas in ppm. Is there an equivalent MQ9 library and would the command syntax be the same ? Thanks very much.

[T-he_End]

lcd.begin();//Defining 16 columns and 2 rows of lcd display . Bro in this line i am getting error. Pls help me .its an emergency pls . I have school project

[MuhammadSyamil-mevw]

bro in the library there is only lpg, co, and smoke, how do i detect the ch4 then?

[JSinc]

Thanks for this, would it be possible for you to add a LPG tank weight monitoring with low level alert, thanks

[ujjwalsinha]

the output is not displayed on the LCD
what to do?

[erasaniswaroopkumar]

can u explain the mq7, and mq8 gas sensors interface with arduino uno output data displays in 20*4 display with code

[manojmodapalli]

sir i did the same connection shown in the viedo, lcd display was working but it didnt show the detection percentage as shown in the viedo how can i fix this problem, thank you

[TheIQ]

can you please give me the vision of liquidi2c library please

[AmanKumar-eswp]

If any one u have and you know how to program them plzz help