How to make a CO2 ppm meter with MQ135 sensor and Arduino NANO

[Sandim_Kaushik]

I know some people might think this question is silly because I google it immediately but I have referred to MANNNNYYY blogs and videos but ALL of the comments were negative and now I dont know WHAT TO DO exactly. Really sorry being rude in this comment. PLEASE help me out

[mfalkvidd]

Hi @sandim_kaushik, welcome to the forum!

Have you tried the gas sensor example? If so, what were the results?

[alowhum]

I'd check this out: https://forum.mysensors.org/topic/6528/mh-z19-co2-sensor/17