How does work MQ2 sensor - MQ2 sensor with Arduino UNO [Code and circuit diagram]

Hello guys, This video includes how to use the MQ2 sensor with the Arduino UNO board. Also, this MQ2 sensor tutorial is presented step by step
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Short and sweet tutorial.Only from SriTu tech. If you think this video is good, don't forget to like and comment.
How does work MQ2 sensor - MQ2 sensor with Arduino UNO [Code and circuit diagram]
• How does work MQ2 sens...
MQ2 Sensor
***Names of components.
***step by step.
***With code.
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( Source code and circuit diagram )
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Website -- bit.ly/2RGi5aU
Android app -- bit.ly/3GWcmmD
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Part's List (Our store -- SriTu Hobby)
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1.Arduino Uno x 1 --- bit.ly/41RMh1o
2.MQ - 2 sensor x 1 --- bit.ly/4465gGw
3.LCD display x 1 --- bit.ly/40u3pcO
4.I2C module x 1 --- bit.ly/3oDXtjV
5.Jumper Wires --- bit.ly/43V7gSR
6.Breadboard x 1 ---- bit.ly/3NaJ1uh
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Parts List (Amazon)
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1.Arduino Uno x 1 --- amzn.to/3hnMhPj
2.MQ - 2 sensor x 1 --- amzn.to/3nL8wCO
3.LCD display x 1 --- amzn.to/3isdBgz
4.I2C module x 1 --- amzn.to/3hqY5jC
5.Jumper Wires ---- amzn.to/2RjTt4e
6.Breadboard x 1 ---- amzn.to/35rdMVE
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#SriTu_Tech_arduino #MQ2 #Arduino_uno

[@karthikgamers7069]

Your are only the one who I can trust for project codes and making them

[@asmaajr194]

Could u give me the whole cod of this project?

[@Wawan_Setiaw4n_Robotik]

Alhamulillah...dapet ilmu lagi, sukses selalu terimakish banyak Kami do'akan semoga sedekah ilmu program MQ2 ini berkah barokah pa Guru. Amiin YRA

[@sritu_hobby]

Thanks

[@_cutipie_]

Can we used it for fire sensor also

[@ricardovalenzueladelgado1465]

muy buena explicacion, podre usar un microcontrolador en vez del arduino? o que cosa cambiaria?

[@sivakumar.v]

Thank you ❤ Can you share the report for this project

[@kothawadegs]

Any tutorials on Figaro sensors?

[@Varunurikiti]

super peechi

[@iockle6777]

please tell me something, the value that it reads on the LCD is ppm or what is it??? i mean what units do they read???

[@sritu_hobby]

Gas sensor reading

[@mdtariqul5261]

Thanks vai

[@RNRHAJ]

do i have to use the same resistor or its ok to use another one

[@bwxcrew]

Great video

[@sritu_hobby]

Glad you enjoyed it

[@sanjanabadgujar7231]

Hello sir I want to do this project without using blynk so can I used this code or I should make changes in the code please tell port and board also

[@NisrinaArifatulIzzah11894imt]

Permisi tanya kak, kalau semisal di tambahkan kabel untuk pasang baterai di pasang disebelah mana ya? Agar tidak nyolok ke listrik apa bila akan digunakan?

[@SwethaMars]

Can I replacy my buzzer somewhere else since the distance from positive and negative is big and my buzzer is small?

[@anhquannguyen9989]

do i have to use the same resistor or its ok to use another one What is the use of the resistor used in this project?

[@ardiiaja5853]

Kalo semisal engga pake lcd display bisaa engga kak?

[@fae-v6d]

can the coding still be used till now? (even when it 2025?)

[@sritu_hobby]

Yes

[@drashti123]

Sir ye sirf lpg gas ko hi detect krta h kya ....and mera buzzer to work kr h but still light ad lcd is not working

[@BeenaSHARMA-z5u]

Same

[@emmanuelgabriel223]

Hello, Good day. I have connected it, but the code is giving me issue, at "lcd.init();" and the error message is this : 'class LiquidCrystal_I2C' has no member named 'init' . Please i need help.🙏🙏🙏🙏🙏

[@sukku962]

Did he reply

[@sukku962]

What did you sort that problem out

[@sathisiddharth5613]

Hlo,how to resolve it

[@drashti123]

sir is it necessary to select only com 4 do we can select other com

[@pushprajchavda514]

Sir buzzer off nhi hota ha kya karo reply please!!

[@danishaiman2985]

can i change the sensor from MQ-2 to MQ-135?

[@bertolibag4400]

Hey again bro can it detect smoke?

[@sritu_hobby]

Yes

[@bertolibag4400]

@@sritu_hobbyhi again bro can i use 220ohm?

[@gds7250]

Code not working why error in header file

[@lahyanikarima8952]

Can you Please Provide the code for CO2 instead of Gas.

[@pyatashivanireddy4898]

Which lighter u have used

[@drashti123]

SIR I HAVE FOLLOWED EACH STEP DONE EVERTHING MY LIGHT ARE ON BUT MY GAS SENSOR IS NOT WORKING WHAT SHOULD I DOOOOOOOOOO

[@mishrirao5408]

Hello! My code is not working I tried everything ,it shows error in the Liquidcrystal library. It says that this kind of library doesn’t exist . Please tell me what to do

[@pushprajchavda514]

Sir Buzzer always sound kar ta ha

[@amine.electronic3119]

Tooooop

[@micheledenticediaccadia7155]

i've done everything you did and everything works exept for the display and I dont know why

[@sritu_hobby]

Check jumper wires

[@micheledenticediaccadia7155]

@@sritu_hobby i checked and they are correctly connected, i literally copied your code, i don't know why it doesn't work...

[@yan_arts4619]

can I use 100ohm resistor for that?

[@sritu_hobby]

Its ok

[@pushprajchavda514]

Power kaha sa mil rahi ha circuit ko (Sayad computer)?

[@sritu_hobby]

USB power

[@SwethaMars]

Can I use MQ135 instead of MQ2??

[@sritu_hobby]

You can try it

[@RhynnselViray]

ser Sritu Hobby pwede pahingi ng code asap po mag prepresent po kami bukas wala napo time if mabasa niyopo to agad😀

[@fae-v6d]

does the coding can be used till now? (even it is 2025 of year) btw are you still alives? reply my comment if you still alives

[@Pixxyp]

Yess… I have made it recently and it also works on mq-4 sensor … I know because I have used my-4 sensor on it

[@poorvi56]

It can same for 135 sensor

[@enjoybeinghealthy766]

​Hey you can pls send me the code​@@Pixxyp

[@enjoybeinghealthy766]

​@poorvi56 hi pls send me the code

[@SwethaMars]

The LCD display is showing the value but my led and buzzer isn't working..Can you help?

[@sritu_hobby]

Check jumper wires

[@drashti123]

MY LCD IS NOT DISPLAYING THE VALUE CAN U HELP ME

[@Eyshikun_]

Available in MQ3?

[@akshaypatil8467]

Can we use multiple Gas detector sensor with Arduino

[@sritu_hobby]

Yah

[@akshaypatil8467]

How

[@anandms4550]

What gas should we pass to that sensor..pls reply

[@sritu_hobby]

LP gas

[@kepinmanuela251]

hello, i had been follow all the step and try it but the module MQ 2 and the LCD is'nt on. can you help me?

[@drashti123]

SAME PROBLEM WITH ME

[@drashti123]

sir this error is showing noiw avrdude: ser_open(): can't open device "\\.\COM4": Access is denied

[@drashti123]

sir my project buzzer is working but still lcd and led light is not working can you please help me through this

[@sritu_hobby]

You must follow basic tutorials

[@drashti123]

which basic tutorial sir @@sritu_hobby

[@drashti123]

SIR I HAVE DONE EVERTHING FOLLOWED EACH OF YOUR STEP BUT STILL MY PRJECT IS NOT WORKING NOT SENSORING THE SMOLE

[@sritu_hobby]

Replace the sensor

[@panktuleaudu2201]

how can i do this without 12c

[@isulaperera]

Mage arduino ide eke if else danna bane. Error enawa. Hariyata dammath.

[@isulaperera]

@@sritu_hobby libraries monahari thiyenawada . Download karanna

[@drashti123]

sir my program is showing a error of Compilation error: LiquidCrystal_I2C.h: No such file or directory pls sir tell me what to do

[@sritu_hobby]

Include the library files

[@drashti123]

SIR I HAVE DONE EVERTHING BUT MY PROGRAM IS NOT WORKING@@sritu_hobby

[@Enhancedemeraldgamingplus3298]

My LED and BUZZER are not working please help, I have connected everything properly

[@Enhancedemeraldgamingplus3298]

Pls reply

[@crazysarthak8638]

Does this detect smoke

[@crazysarthak8638]

Smoke like burning please reply🤔🤔🤔

[@pushprajchavda514]

Bhai code work nhi kar raha ha error aa rha ha

[@sritu_hobby]

You have to visit arduino basic tutorials

[@Shreya2.09]

I tried.... But its not working..... Pls help

[@asmaajr194]

Sir could u give me the whole code for copy it

[@sritu_hobby]

Description

[@drashti123]

I HAVE TO SUBMIT IT BY TOMORROW

[@nuheavy]

Today I’ve too

[@satyanagasrimarella22]

can you send the whole code

[@drashti123]

sir after clearing each error still my project is not runnuing

[@sritu_hobby]

Please follow our steps

[@drashti123]

SIR I HAVE FOLLOWED EACH OF YOUR STEP @@sritu_hobby

[@drashti123]

PLZZZZZZZ SIR HELP M,E THROUGH THIS @@sritu_hobby

[@drashti123]

hello sir

[@sritu_hobby]

Hello

[@drashti123]

what is the issue

[@aramluqman6934]

Please i need the code 🙂❤️

[@sritu_hobby]

Description

[@lnikhilshanonragam1420]

LCD is Blank, pls help

[@sritu_hobby]

Check the jumper wires

[@hongcuongvu7803]

em xin code với được k ạ

[@sritu_hobby]

Description

[@karthikeyan7139]

Where i can download the code

[@sritu_hobby]

srituhobby.com

[@karthikeyan7139]

How to add that in Arduino library

[@meisyaeliya]

di aku gabisaa kakk

[@kevien6862]

What is resistor

[@sritu_hobby]

180 ohm resistor

[@kevien6862]

Can use lcd1602?

[@sritu_hobby]

Yes

[@kevien6862]

@@sritu_hobby Can I use another resistor?

[@sritu_hobby]

You can try it.

[@chantel2450]

is this a smoke detector?

[@gabrielondoy2323]

Can I have the source code

[@sritu_hobby]

Description

[@udeeshamithun-jk5tf]

Can we make this with Arduino nano ? Please tell me

[@roboticsbyhitarth]

Code please

[@sritu_hobby]

Description

[@drashti123]

PLZZZZZZZZ HELPPPPP SIRRRRRR

[@SowmyaSasubilli]

Could you please send me the code

[@sritu_hobby]

Description

[@СариевАсылжан]

Ссылка на код не рабоатет (

[@sritu_hobby]

srituhobby.com

[@Unkown-b7z]

Where i can find code

[@sritu_hobby]

Description

[@aiman-n1k]

hi can u give your ig

[@aiman-n1k]

or another social media i have something to ask

[@vrt6131]

Can I use 220 ohm resistor?

[@sritu_hobby]

yes