How to Monitor Air Quality | Air Quality Monitoring System | ESP8266 | Blynk IOT Projects

[@novogames]

Can you pls explain how to connect the lcd display to this project ?

[@novogames]

Hi sir , When I upload code in nodemcu board it's showing a warning: library liquidcrystal i2c claims to run on avr Architecture(s) and may be incompatible with your current board which runs on esp8266 Architecture(s) And my lcd is not showing anything

[@brianwijaya7378]

Have u fix the problems ?

[@novogames]

@@brianwijaya7378 nope

[@seajanginisv7892]

Bro whether output came.. did you troubleshoot this problem

[@shortcinema007]

Do u get the ans?? I am getting the same issue

[@novogames]

@@shortcinema007 not yet

[@AbaidUrRahman-l9y]

I have used the same components, connections, code and library but still nothing shows on lcd, not even power. please help me

[@beingenter10er84]

Sir please tell where did you write the code, how to upload the code to ESP8266 board

[@TechTrendsShameer]

To write code I am using Arduino IDE. Check this video for NodeMCU setup kzbin.info/www/bejne/f4m2q4Smm9VjpJY

[@beingenter10er84]

@@TechTrendsShameer Thankyou sir for your response, but even after trying multiple libraries for LiquidCrystal_I2C showing "compilation error no such file or directory is found" sir, Please tell what should I do

[@TechTrendsShameer]

May I know how you installed the library?

[@beingenter10er84]

@@TechTrendsShameer Sir after trying your zipped file for LiquidCrysta, it worked But now same problem is arising for (HID) but unlike other libraries I used there is not any proper library in Aurdino IDE as HID. And even after trying a zip file from aurdino website, error is same Sir please tell me what should I do

[@TechTrendsShameer]

What is HID ?

[@YashKatkamwar-fx8iq]

Exactly which I2C converter we should needed

[@adjanerossana7812]

Project successfully completed!🎉 Thanks for the support, it worked perfectly Sir

[@TechTrendsShameer]

Great 👍. Thank you.

[@samuvelprakash7640]

Can u give circuit diagram for ours project

[@samuvelprakash7640]

​@@TechTrendsShameersir pls teach that how can I put connection?

[@Prashanttiwari895]

How to connect lcd?

[@aswindr3640]

Can this done as final year project for mechanical engineering students?

[@TechTrendsShameer]

Please check the project title with your faculties and get approval before starting the project.

[@human464]

Iot are for cse IT students

[@shubhangigavhale654]

Sir can I use I2C module instead of I2C converter & MQ2 sensor instead of MQ135 please reply sir

[@q2l867]

can this be done as final year project for IT student? what AI features or machine learning can I add to it to automate it more

[@TechTrendsShameer]

Yes you can do. I haven't tried AI.

[@sholawatmilenial4335]

Why do I practice using your coding? My LCD won't display writing according to the coding? Please help

[@TechTrendsShameer]

Adjust the potentiometer.

[@sholawatmilenial4335]

@@TechTrendsShameer Yes, but only the boxes appear and the writing doesn't appear

[@TechTrendsShameer]

Use this library and try. github.com/Tech-Trends-Shameer/Libraries/tree/main/LiquidCrystal-I2C

[@towseefYoungestIASTrainer]

To which u connected the air quality monitoring device that black cable is it to Laptop Plzz say it fast

[@TechTrendsShameer]

Yes. I connected to laptop. You can connect using power bank too.

[@carlangelolorete2912]

Can I use this as our Computer Science thesis? Is there CS Theory and Algorithm applied in this project? Need advise

[@TechTrendsShameer]

You can.

[@amnanafeesaabdulrahman7886]

Hi can you tech me how you do this

[@mamitamishra8571]

Can we use a medium size breadboard to do this

[@TechTrendsShameer]

Yes.

[@MOHAMMEDDHALKADhalka]

​@@TechTrendsShameer😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊

[@MOHAMMEDDHALKADhalka]

​@@TechTrendsShameer😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊

[@MOHAMMEDDHALKADhalka]

​@@TechTrendsShameer😊

[@BhargavM-e9h]

Sir can u make the detailed video about the code and connection or can u explain it in comment section

[@TechTrendsShameer]

Ok

[@idk0075]

sir i have a doubt, the gnd of esp is connected to the +ve rail whereas gnd of dht11 is conn to -ve rail, from what i have heard that gnd should always be connected to the -ve rail of the breadboard and vcc/vu to +ve rail so sir can please clarify on the circuit diagram in this video

[@maristelakrystalp.2025]

Why my arduino tools showing the Board: Arduino Uno instead of Board: Node Mcu you provided? Please help me asap, this will be my projects. I am a IT Student here!

[@TechTrendsShameer]

Please check this video to setup NodeMCU kzbin.info/www/bejne/f4m2q4Smm9VjpJY

[@maristelakrystalp.2025]

@@TechTrendsShameer it shows that "Error compiling for board NodeMCU 1.0 (ESP- 12E Module)" how can i fix this? i already connect my board in my laptop

[@maristelakrystalp.2025]

please reply me asap :)@@TechTrendsShameer

[@nilamanipritishchandbehera5216]

Bro how to connect the model to computer and where we have to paste the authentication token and template id

[@TechTrendsShameer]

Please watch the full video. Connect the board to the laptop using cable

[@hassam01]

i 'm using 2 different mq135 but readings are 750+ on both sensors (room and outdoor same results) whats the problem?

[@TechTrendsShameer]

Do Calibration

[@virendra7178]

How the board is getting powered?it is not shown in video

[@TechTrendsShameer]

Connect to laptop or power banker

[@vlladimirarositadomingoaga7831]

How to connect solr charger connector, solid copper wire, solar panel and powerbank? For air quality monitoring system.

[@abdullahgamer7856]

Can we also use dht 22 sensor instead of dht11

[@TechTrendsShameer]

Yes. two lines of code change will be there.

[@themagniranthine]

Are you using male to female wires?

[@TechTrendsShameer]

Yes. Male to Female (For Breadboard to Sensor Connection) and Female to Female (For I2C to Sensor Connection)

[@themagniranthine]

​@@TechTrendsShameer By the way I tried to make the circuit diagram in Fritzing but I didn't find the library for MQ135, do you think you can help me with that?

[@aliif.haikall]

can i know the details name of the I2C conver?

[@TechTrendsShameer]

I2C Module for 16x2 (1602) Character LCD

[@amnanafeesaabdulrahman7886]

can i know your system is successful or not

[@johnarbynavalta5634]

Does this send you notification quickly, when it detects bad air quality? Please answer🙏🏻 thank you!

[@mihitamadhusmitasahoo4788]

After assembling all the components mentioned in description ESP8266 in not getting displayed in arduino Can you please help to finish this project

[@TechTrendsShameer]

please message me in Instagram.

[@arunkumarmanokaran7983]

mam are you sucessfully completed the project ?

[@iockle6777]

I2C CONVERTER link to buy its not in the description

[@TechTrendsShameer]

www.electronicscomp.com/i2c-module-16x2-lcd-india

[@riemakoe]

Can this detech odors also?

[@TechTrendsShameer]

No.

[@maristelakrystalp.2025]

can you give me a report about the blynk and thingspeak iot for air quality monitoring system? I am a student here! hope you will answer asap!

[@TechTrendsShameer]

Contact me in Instagram.

[@maristelakrystalp.2025]

hello! i already message you on instagram! @@TechTrendsShameer

[@Funuv22]

Hii maristela can you give me your report?

[@Funuv22]

​@@maristelakrystalp.2025 hii maristela can you give me your report?

[@prajaktaardekar612]

Sir can you please tell us how to configure arduino for this project, i.e how to get NodeMCU 1.0 board to select ESP8266 Boards (3.0.2)??

[@TechTrendsShameer]

Please check this video kzbin.info/www/bejne/f4m2q4Smm9VjpJY

[@prajaktaardekar612]

@@TechTrendsShameer Thank you so much sir!

[@prajaktaardekar612]

@@TechTrendsShameer The code is correct and has been verified but it is not getting uploaded sir. I have tried everything but it is not working. Please tell me what to do sir. Please help.

[@prajaktaardekar612]

Sir please reply

[@maleakhisamosir3662]

Sir did u know jow to replace it to lcd TFT

[@TechTrendsShameer]

I haven't tried.

[@vijaynaru]

there are error in code. nodemcu pin to be defined as D2 and not 2. further GAS value is not getting printed in serial monitor being not defined

[@TechTrendsShameer]

Both are correct. If you define as D2, you need to connect to PIN D2 in Nodemcu. If you mention as 2, then you need to connect the D4 in NodeMCU (GPIO4).

[@akankshapasalkar8413]

Sir i dont want to use I2C controller then it will okay or not

[@TechTrendsShameer]

You need to modify the code if you are not using I2C.

[@Fatechanger2219]

Which app did u use for simulation

[@themagniranthine]

You mean fritzing?

[@Fatechanger2219]

@@themagniranthine Nothing bro by the time you replied my project also got completed

[@sadiatasfia5047]

LCD isn't working but blynk app showing the result. How can i solve this problem?

[@TechTrendsShameer]

Check this. kzbin.info/www/bejne/e53QfX55Z8ych5o

[@bipuu]

hello, can i do this project without the I2C Converter?

[@TechTrendsShameer]

Yes. You can. But code and circuit will change.

[@mohithr3604]

​@@TechTrendsShameerupload a video for that also

[@shivampandey-vc4xn]

can we use ESP 32 in place of ESP8266

[@TechTrendsShameer]

Yes. Check this video. kzbin.info/www/bejne/o6fHoXSbd7t8e8k

[@atakanatay8376]

What is the maximum value that the gas sensor can show? What is the maximum number I can write instead of 600?

[@trisha5397]

is it okay if the lcd is with 12c at the back?

[@TechTrendsShameer]

It's completely ok. You can also use in that way.

[@Nithin_1367]

Provide the connection for interfacing of circuit

[@TechTrendsShameer]

Its in the video. Watch full video.

[@Nithin_1367]

Which IDE version you are using in this project

[@TechTrendsShameer]

Arduino 1.8

[@aidilrozlan6066]

What if I don't use 12C Is it still working or not?

[@TechTrendsShameer]

You can use without I2C, but the connections will be different and you need to make few changes in program.

[@KorupalaTejaswini]

The website link for equipments is real???

[@TechTrendsShameer]

Yes. It's real. For for psst few months the site is taking more time to deliver. You can try the below websites Robu.in Zbotic.in

[@faisal-k2e]

please help there is an error that says BlynkSimpleEsp8266.h: No such file or directory

[@TechTrendsShameer]

Install Blynk library.

[@RameshBabuP-x9h]

I am getting Compilation error: DHT.h: No such file or directory message, what should I do ?

[@TechTrendsShameer]

Install the DHT library from Arduino IDE -> Tools -> Libraries.

[@missilegamer4375]

Sir I have doubt, can we see output without lcd display on phone or laptop any chances are there sir ?

[@HahaRedacted]

😭🙏

[@shamouelansari7490]

sir how will the display will get turn on and how will it get power please reply its urgent its for my ty final year project

[@rishitgarg]

If we not apply screen did project work

[@TechTrendsShameer]

Didn't get your question.

[@rishitgarg]

@@TechTrendsShameer means in code led code is also there so if does not connect 16x2 led so project work I have dht 11 and mq 135 sensor

[@rishitgarg]

My project is working fine with dht 11 sensor and is giving output to blynk but when I tried to run with your code which includes 16x2 led screen,mq135 sensor and dht11 sensor blynk is not showing error.i have not attached led 16x2.

[@TechTrendsShameer]

Remove the lcd code and try.

[@sanjaykhatri6093]

Nice project but if i have to use this in the open field it is not working as there is no wifi connection so pls can you make A project that works on arduino nano as it does not Requires wifi connection and can sense Air Quality anywhere without wifi or internet connection

[@ZainIbrahim-y1x]

Hey! we are also working on a similar idea that you referred, did you find any similar videos/projects related to that? Also please tell us because we are going to make it a final year project. Thanks

[@sanjaykhatri6093]

1 person by the name vk technology has put the project on youtube is working without wifi with ardu nano but has not put code in the discription and is asking 1000 Rs for code

[@sanjaykhatri6093]

It is vmk projects

[@sanjaykhatri6093]

It is vmk technology

[@noviramadani5632]

Sir, why is my lcd not showing the value?

[@TechTrendsShameer]

Use the LCD library mentioned in the description and also adjust the potentiometer in I2C converter and try.

[@noviramadani5632]

@@TechTrendsShameer Thank you!

[@samarthjachak7359]

Sir can you please provide full code for this IOT device 🙏🙏

[@rameshbhajanthri4242]

Sir i am not able to upload the program in the nodemcu board and there are errors in the program

[@Eshuu__29]

BRO IM ALSO GETTING THE SAME PROBLEM IF UH SOLVED THE PROBLEM PLEASE HELP BRO!!!

[@vnyzdecastr0]

Hello is this really working, i planned to do this with our project

[@TechTrendsShameer]

Yes. You can see the output in the video.

[@vnyzdecastr0]

Can it be use, using Arduino uno r3

[@vnyzdecastr0]

Is this the same code if i used arduino uno r3 than nano?

[@TechTrendsShameer]

Code will change.

[@TechTrendsShameer]

Code will change.

[@sumithar1797]

Sir i like your project. I have a doubt for every air like fresh air and smoke it will show same result or different one.

[@TechTrendsShameer]

The sensor will show different results for fresh air and smoke.

[@aliif.haikall]

why i cannot find the esp8266 in fritzinf app?

[@TechTrendsShameer]

Many parts are not available. You can download from this and import in fritzing github.com/squix78/esp8266-fritzing-parts/blob/master/nodemcu-v1.0/NodeMCUV1.0.fzpz

[@nostatus253]

Sir can you help me how to display data of Computer screen on led board..I want to display AIqms data which coming on my computer on led signage board

[@TechTrendsShameer]

can you please be little more clear on what you need to display?

[@nostatus253]

Sir.i have .txt file.in which content is there which update every 5minutes .i want to broadcast this .txt on led board

[@TechTrendsShameer]

please message me in Instagram.

[@Mini_vlogs2484]

Program is that much only??

[@TechTrendsShameer]

Yes.

[@aimi9374]

can u named all components that u used in fritzing?

[@TechTrendsShameer]

Please check the video description for the components details.

[@soyaibansari3398]

Sir atleast make detailed video about it as most of the people are new to this things like me please provide more info like explaining the code how do we upload the code how to connect blynk to our esp8266 or any other board as of now i am stuck that i have uploaded the code..... followed every step you said and still not working...help us

[@TechTrendsShameer]

I explained the steps of blynk connection in the video. Esp8266 Setup I explained in a separate video. If I include esp8266 Setup steps in every video, video Length will get increased.

[@soyaibansari3398]

​​@@TechTrendsShameerI've used the small sized bread board did the connection as you showed in circuit diagram idk what is happening my display is not showing any reading form humidity temperature sensor it shows nan% and in MQ135 sensor I am always getting higher number and on blynk dashboard am not getting any reading what to do?

[@MokshaParmar-c8j]

How much will this project cost?

[@TechTrendsShameer]

Components link provided in video description. Please check.

[@SrishtiDubeyE]

hello, I need the flow chart of the circuit.

[@rohan8655]

Sir we are making this as our semester capstone project please help us relate to this project

[@TechTrendsShameer]

Please contact me in Instagram instagram.com/tech_trends_shameer/

[@RISHIRAJ-t7z]

Code is showing errors , It says: "No such file or directory"; Please Help ASAP

[@TechTrendsShameer]

Install the library

[@shivang_4857]

how to download libraries and install it in arduino ide

[@TechTrendsShameer]

From Arduino IDE, go to Tools and select Manage Libraries. Then search for the library and install it.

[@themagniranthine]

how to find template id and template name also auth token on blynk?

[@harshithac8555]

It's shows the error and blynk sampleEsp8266.h No such file or directory like this

[@TechTrendsShameer]

Install the Blynk library

[@Shin-d8b]

sir i need answer ASAP the code is working but the gauge in blynk is not showing the data can you show me how please😭😭😭

[@TechTrendsShameer]

Check the Auth code and wifi credentials are correct.

[@idk0075]

hey did it work?

[@unprofessionale]

WARNING: library LiquidCrystal I2C claims to run on avr architecture(s) and may be incompatible with your current board which runs on esp8266 architecture(s). It says like this when I try to compile,what should I do sir?

[@TechTrendsShameer]

You need to install that library LiquidCrystal I2C

[@unprofessionale]

@@TechTrendsShameer yes I did but the problem still persists sir

[@TechTrendsShameer]

still same error ?

[@unprofessionale]

@@TechTrendsShameer ya actually I install more than one library(liquidcrystal)...but still the same

[@TechTrendsShameer]

Remove all the old libraries and use this one alone. github.com/Tech-Trends-Shameer/LiquidCrystal-I2C

[@mdjamal9527]

sir how you connected the lcd display on bread board please tell

[@TechTrendsShameer]

Just place the LCD on the breadboard and press it

[@shivamagrawal9597]

Sir how it will be powered

[@shivamagrawal9597]

Means can it will run with battery

[@TechTrendsShameer]

Yes

[@errornotfound7841]

im getting blank display and nothing displayed in blynk plx help

[@TechTrendsShameer]

Adjust the potentiometer

[@ParvJain-h1n]

sir we are getting error as "A fatal esptool.py error occured: Write timeout" what to do

[@TechTrendsShameer]

Remove the cable and connect again.

[@shubhangigavhale654]

Sir my node mcu board do not turn on after power supply can I give external power supply for this system please reply to me sir it's important because my final practical exam ahe

[@ಬಣ್ಣಬಣ್ಣದಲೋಕ-ಣ6ಠ]

Sir im getting error as lcd.begin() as liquidcrystal

[@TechTrendsShameer]

Follow this video. kzbin.info/www/bejne/e53QfX55Z8ych5o

[@gohilharsh501]

Your website name please...

[@TechTrendsShameer]

instagram.com/tech_trends_shameer/

[@rafiulkabir8096]

Can you make me programme for arduino nano whit out esp

[@TechTrendsShameer]

This program we can't do with Arduino Nano since nano board doesn't have WiFi.

[@devanshigupta7162]

Do you sell such projects?

[@prasadadavi6618]

Which gas is sensed and what are the units of measurement?

[@TechTrendsShameer]

Unit is ppa

[@prasadadavi6618]

Is it ppm or ppb? Which gas?

[@rafaelleal8315]

Could you provide the complete code, please?

[@TechTrendsShameer]

Yes. I have sent the complete source code to your email. Please check.

[@rafaelleal8315]

@@TechTrendsShameer thank you very much friend!

[@TechTrendsShameer]

Welcome. Keep supporting.

[@yatheesh3624]

Bro please send code

[@thaqifkhalaf1100]

​@@TechTrendsShameer sir can i have full code

[@Sai_Aesthetic]

Sir it showing error on #include

[@TechTrendsShameer]

Install the blynk library.

[@rohan8655]

We are not able to mae it work can you help us sir pleas

[@TechTrendsShameer]

Please contact me in Instagram instagram.com/tech_trends_shameer/

[@imamuddinmuddin5558]

bang program esp 82 bisa nggk di pakek sma rogram esp 32

[@TechTrendsShameer]

Yes you can use. But there is a slight change in program. Please refer this video for eps 32. kzbin.info/www/bejne/o6fHoXSbd7t8e8k

[@ayanahmad8897]

Sir please can u gave me source code of this aurdino

[@TechTrendsShameer]

Please check video description

[@12stem4-balibalitaaeronsmi8]

Thank you, it helps a lot!

[@TechTrendsShameer]

Glad it helped! Please Subscribe.

[@clobel55]

how can you say that? This guy can't speak English

[@TechTrendsShameer]

@@clobel55 Didn't get you. May I know what you mean?

[@SFFRN19]

​@@clobel55Lmao The irony of this white man

[@aisyhanur8432]

Hi can u give me connection all component ?

[@TechTrendsShameer]

Connection is mentioned in the video. Please check.

[@mariusmatawaran30]

How do you fix this error? 'class BlynkWifi' has no member named 'email'

[@hildansaputraaa]

do you have solution?

[@TechTrendsShameer]

Remove that line and try

[@shadowthehedgehog5303]

🎉

[@EVERY.CIRCUIT]

Wow

[@TechTrendsShameer]

Thank you

[@MekalaAruna-rh5rk]

How to do computer coding i cant understand that where should i go for the coding

[@Denge-Denge]

Arduino sketch

[@mjplantilla4672]

Could you send the full code?

[@TechTrendsShameer]

Check video description.

[@rohan8655]

Sir circuit diagram is not provide it

[@TechTrendsShameer]

Its there in the video. Please watch the full video.

[@senseissenseless]

Hello , I really need to use a water sensor instead of a Air monitoring sensor. How can i do this such that when water is detected, there should be a notification or alert in Blynk IoT of water dtected. Kindly help me asap

[@dumbskull106]

Can i get the full code please 😊

[@TechTrendsShameer]

Check video description

[@Prasant-x2z]

brother pls help me using this code my lcd is not working it is not responding to the commands

[@shindeanirudha9999]

Sir what is budget

[@Vijayegspec]

please,kindly solve this error Variables and constants in RAM (global, static), used 31520 / 80192 bytes (39%) ║ SEGMENT BYTES DESCRIPTION ╠══ DATA 1560 initialized variables ╠══ RODATA 2688 constants ╚══ BSS 27272 zeroed variables . Instruction RAM (IRAM_ATTR, ICACHE_RAM_ATTR), used 61911 / 65536 bytes (94%) ║ SEGMENT BYTES DESCRIPTION ╠══ ICACHE 32768 reserved space for flash instruction cache ╚══ IRAM 29143 code in IRAM . Code in flash (default, ICACHE_FLASH_ATTR), used 258612 / 1048576 bytes (24%) ║ SEGMENT BYTES DESCRIPTION ╚══ IROM 258612 code in flash

[@VijayKTS45]

I also faced this problem 😢 please kindly help us 🙏🏻

[@TechTrendsShameer]

Remove the cable and connect again and upload. Also press the RST button in the nodemcu

[@TechTrendsShameer]

Remove the cable and connect again and upload. Also press the RST button in the nodemcu.

[@VijayKTS45]

I did sir but not work😢

[@VijayKTS45]

Kindly help me sir😢

[@saitamar4541]

Can u please send the pin configuration and source code for all the sensors it will help me a lot

[@TechTrendsShameer]

May I know what all sensors you need?

[@amnanafeesaabdulrahman7886]

its error no matching function liquidcrytal 20,4

[@TechTrendsShameer]

Which lcd display you are using ?

[@amnanafeesaabdulrahman7886]

@@TechTrendsShameer i use lcd display 1602 module blue

[@natashaazaidi]

Can i get full coding ?

[@TechTrendsShameer]

Check video description.

[@gogglegshdhhdh3652]

Could u please send the full code for me,, please sir

[@TechTrendsShameer]

Please check video description

[@gogglegshdhhdh3652]

Ok sir,, thank you so much for your support💪💪💪💪💪

[@Ashish.1717]

why is my lcd not showing the value

[@TechTrendsShameer]

send me the screen.

[@ayeshasuhaiba683]

Sir if I convert c code to Python ,it possible to come output