I got the Grove V2 multichannel gas sensor and have been trying to get accurate values in ppm. Using the V2 library they provide (https://github.com/Seeed-Studio/Seeed_Multichannel_Gas_Sensor/archive/master.zip). I’m getting values that are way off, so I suspect the values aren’t actually being returned in ppm, but I don’t know how to convert them. Either I need new code, or my sensor is not working properly. Here are the values I’m getting:
Ethyl Alcohol: ~389
These would all be pretty harmful levels of the gasses and I am in a low air pollution environment.