DIY Air Quality Monitor - PM2.5, CO2, VOC, Ozone, Temp & Hum Arduino Meter

Parts list (check website article for full list, affiliate links):

Poor air quality can lead to many negative health effects as well as can cause tiredness, headaches, loss of concentration, increased heart rate and so on. Monitoring the quality of the air may actually be more important than you realize. So, in this tutorial we will learn how to build our own Air Quality Monitor which is capable of measuring PM2.5, CO2, VOC, Ozone, as well as temperature and humidity.

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[bertramusb]

Hey man, just wanted to complement you on your thorough explanation of the function of each sensor, especially including brief info on sources of contaminants. You get a lot of info in without getting off track or droning on and on, and it makes for a great video.

[tzisorey]

I like how he explains how the sensors work on a mechanical basis, not just how they're used electronically.
I should build one of these, for my oil painting area. At least the VOC part.

[haneen]

Your tutorials are great and I appreciate that you provide the STL files. However for those of use that want to learn to design specifically mechanical parts and robots, it would be great to have a series that explains more of the designing process! Thanks for sharing your knowledge and creative projects!

[josemanuelalogoadjomo]

nice content as usual, thanks!!
pls the code explanation part is not boring at all, in fact is the most relevant part of a project, kindly do not be skipping it!!!
most of the times i have got to learn new programming concepts trough your code explanation.

[mayxnerde]

For the rebuilder:
Correct resistors values:  R1 = 1K, R2 = 2K, R6=100K or 1M, R7=1K
have fun, Mike DF7MR

[dozog]

Don't get me wrong, the thing is very well made, and I understand that not everyone is comfortable around ESP8266, but this project seems to be a perfect fit for one of those.
- No need for RTC (just get time from internet (at power up) )
- Upload new sketch over the air.
- Check your graphs and data on any android phone (can even skip the display.. which is expensive)

[DivyanshMMMUT]

Thanks for explaining how the sensors actually work 🙏

[kevin]

your channel is one of my best discoveries, thank you

[voicesarefree]

Super cool! Has me considering a touchscreen and custom PCB as well. Only thing I would change is to network the device and log the measurements somewhere that Home Assistant can integrate.

[leeoliver]

A fantastic video. If you decide to carry on with this project a carbon monoxide sensor would be a great addition to help protect people who use gas for heating.

[piconano]

Excellent project for the right person.
I built one 3 years ago. No LCD, since I used a ESP8266 module instead of a promini, and did everything through the browser.
I only installed DHT-11, MQ-5, MQ-3, MQ-9 and MQ135, VEML6075 UV sensor, and DSM501A PM2.5 dist sensor, which was $4!
I think my project cost about $25-$30
Yours is in excess of $100 without a PCB.

[isprithul]

I was just wondering, why not use BME280 for temperature and humidity measurements? It has much higher resolution and accuracy than the DHT22. Air pressure reading is a bonus.

[DDryTaste]

These sensors don't have to be calibrated?

[guinieroo]

Great video! As a environmental eng, I can tell you thats amazing. Low cost and very good precision. Did you comparate with a real sensor, like a industry sensor?

[batchrocketproject]

Fabulous build. Thanks for posting and for all the linked details. 💯👏

[Freestila]

Ever thought about using an esp to integrate in smart home systems instead of the arduino? Would also have 3.3v diectly

[jantepas]

Great project, and integration with home would be great! Thanks for this project!

[vigasan]

Great video, I made a similar system based on ESp32 without display but It can be integrated in home Assistant so you can check data also remotely

[kenbarbee]

Great Project - Got everything on order! Can't wait to build! Can you point us to a complete bill of materials for the passive PBC components?

[AndyPandy-tf]

My greatest compliments for your design. I build it and it works perfectly. Very good thinking about features and timeline. I made some adjustments so I can easely exchange sensors, but for now I cannot imaging what I should change. Calibration is for me less important compared to more or less value readings. Maybe the loss of data when disconnecting the power could be a minor issue to solve. Thanks for all your time! Great job!