IOT Based Gas Level Monitoring over Internet Using ESP8266

In this project, we will learn about Gas Level Monitoring Over Internet Using ESP8266 & Gas Sensor Module, i.e MQ135. We will measure the quantity of gas in percentage and send it over the internet using the thingspeak server. With this system, the data can be monitored remotely staying at any part of the world.
We just need a gas/smoke/LPG sensor like MQ2/MQ3/MQ5/MQ7/MQ135 that is directly connected to Nodemcu ESP8266-12E Module.
Source Code Link: how2electronics.com/gas-level...
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Website: how2electronics.com
Facebook: / electronicsbyalex

[@sakunthadassanayake]

Thank you team.

[@electronic7979]

Educational and useful video. very nice. I really like.

[@Alpha-eh3ol]

Did u preheat the sensor before connecting? Also how did you calibrate it.

[@InnovatorsStudio]

Excelente video, muchas gracias, saludos desde Colombia.

[@miguelolvera3546]

Hello, How to Electronics, do you know how to connect the MQ131 sensor to the ESP32, or do you have a video demonstrating it?

[@syazwankhalid4472]

mine only achieved until 28-29ppm. is it possible to increase the number of ppm? because idk how. already tried with other brand of MQ7 sensor. yet the result still the same. if possible, can you tell me how?

[@anirbanmandal3123]

Nice tutorial

[@maimun2000]

why cant i see the graph in thinkspeak?

[@rhnsra9289]

Why i have no graphic from thingspeak private view

[@lishavarshinig201]

Sir, whether we can connect gas level monitoring over internet using ESP8266 with gas leakage detector using gsm module and Arduino with sms alert

[@EforEngineer]

Using Perfume as Gas is Awesome.

[@electronicsinnovation]

Good project, add an alarm to detect gas leak like buzzer.

[@HowtoElectronics]

Make next time on the similar video.

[@faizhaikal6868]

Why in serial monitor it said
Conneting to.....
(My wifi name)
It repeat more and more. Can i know why?

[@gayathrikummari-bm6jh]

how to preheat the sensor? can u explain ASAP.

[@cuckoo1715]

Can we use Mq2 instead of Mq5 ?

[@zizo8737]

Please tell how can u include the lcd in this same thing

[@anjusosa8150]

Sir can we use same code for MQ7 gas sensor??

[@noobgameplay928]

MQ6 sensor work ?

[@supriyono1493]

Good sir, can add more than 2 sensors and a buzzer

[@fakewars9395]

is this output is PPM or ?

[@sivakumarc3853]

How to simulte the esp32?

[@huseyinozkrml4704]

pls help
'WiFiClient' does not name a type

[@haziqhaiqal4792]

why (client.stop();) not declare ?

[@subratabhanu2627]

graph is blank in the thingspeak..

[@oluheiyanthuduwa5273]

how can we do this for petrol?

[@ElectroniClinic]

Good job

[@dhilepraj2947]

Sir I did step by step how u teached like that only I did finally i got output

[@unitedrobotics7377]

Bro how can we Install esp8266libraries??

[@thegamerspandan6899]

In intro How To Lectronics nice.

[@amanfaizal7848]

can't you see the big letter E on left side??

[@srilalithaparameswarisistl2452]

please help me. I didn't get any values

[@md.motiurrahman7249]

In my case, entry is recored in thinspeak but data is not uploading. What should I do?

[@Heisneba]

same here do you get solution?

[@agnivabanerjee6510]

You need to apply a delay of 20s

[@ramyaragavi7749]

I need to connect mq9 and mq135 sensors to nodemcu pls suggest any analog extender

[@HowtoElectronics]

Use Analog multiplexer IC 74HC4067 or 74HC4051.

[@sohampasalkar8224]

Sir Great Video 😭
Can you just please the make same video just this time displaying sensor data on 0.96 OLED display 🙏🏻
Can you provide source code for this
ESP 8266- MQ135 - 0.96 Oled

[@anukampakerketta2744]

Can u suggest me...from where u get the program of this project...

[@HowtoElectronics]

Visit the link in description from PC.

[@desaiprem5858]

Man what we have to take the value if h

[@badrulaminbinmdnayanb2330]

Sir. Why the thinspeak had the entries, but it's dont plot the graph????.

[@amirsaahal2425]

sama bro :OO

[@badrulaminbinmdnayanb2330]

@@amirsaahal2425 gua dah dapat solution bro. Tapi coding lain skit laaa .

[@amirsaahal2425]

​@@badrulaminbinmdnayanb2330 bro boleh share coding tak ? apa ig bro? nt sy dm no

[@badrulaminbinmdnayanb2330]

@@amirsaahal2425 nayanbadrul

[@nikffs]

@@badrulaminbinmdnayanb2330 bro bisa bantu saya ?

[@bartekll7068]

why you connect it to Vin pin? why u didn't use pin 3.3V ?

[@HowtoElectronics]

Bcoz gas sensor requires 5V.

[@bartekll7068]

@@HowtoElectronics ah ok :)

[@michaelquinn1926]

@@HowtoElectronics why i cant use Vin pin in my node mcu? so i decide to use VU pin

[@priyankavellingiri5249]

Is it possible to do this without using Arduino Uno board?

[@HowtoElectronics]

You can use any microcontroller

[@priyankavellingiri5249]

@@HowtoElectronics U didn't use any microcontroller right?.and one more.. is Node mcu esp 8266 is same as esp 8266 12E

[@niravgaglani5495]

the sensor you are using requires 15 volt DC input !!! And I think the board you are using can only supply 5 volt DC !! How can we use this sensor with a 5 Volt board ?

[@HowtoElectronics]

The sensor works at 5v not at 15v.

[@dtn2529]

MQxxx sensors must be calibrated. Otherwise, meaningless numbers are read.

[@sivakumarc3853]

Hiii...what is the unit for gas level here?

[@Alpha-eh3ol]

It is in ppm

[@sivakumarc3853]

@@Alpha-eh3ol thank you

[@jamshirtangri5757]

Can u explain the code sir