Which NO2/NOX low cost sensor integrable on Arduino would you recommend?

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Sharnil Pandya

Yes, I have done some work on this thing....you can refer these articles: (i) Article Pollution Weather Prediction System: Smart Outdoor Pollution...

(ii) http://www.cit.iit.bas.bg/CIT-2020/v-20-2/10341-Volume20_Issue_2-10_paper.pdf

Enrico Giuseppe Cadau

Thank you Sharnil for your articles.

I've been testing the following sensors:

MH-Z19B (CO2)
MICS-4514 (CO/NO2) which is causing me some issues
MQ131(O3)
DHT22 (Temperature/Humidity)
SDS011 (PM 2.5/PM 10)

I have never tested ZE07-CO or NO2-B43F sensors. Do you have also the related code for Arduino/Raspberry?

Yes, I can share some code related to the ZE07-CO sensor. I will contact co-authors and send you them. Send me your email address. Maybe this link will help you: https://create.arduino.cc/projecthub/ingo-lohs/carbon-monoxide-gas-sensor-mq-7-f7f327.

Thanks you Sharnil, now I am trying to follow this schema: http://www.areresearch.net/2017/03/detect-co-with-mq-7-sensor-module.html which uses a very low cost sensor.