Hi,
I'm using the BME680 for outside air quality control and expecting since 2 weeks about strange values.
As you can see in graph the CO2 values are in the morning about 500ppm but in the evening all the time about 6000ppm.
I'm not sure what this can be, because the air seems (for my nose 🙂 ..) more or less "fresh" , I'm living outside a city in a smaller town.
And yes, right, if the air was "contaminated", i.e. someone made a fire in the vicinity, the sensor recognized this - with values between 7000 and 15000.
(the same for cigar smoke etc.)
But what now happen do not know.
I made a "reset" at April 5th in the morning (in graphics a falling line to 500) but in next time the same again.
Somebody have an idea what kind of air component this could be?
I made an additional test with other indoor sensor BME680 - if I will open the window in the evening the value is getting worse (from 650 to 900 - then closed, and value was going back)
Would be nice to understand it - even if it not easy ... any idea welcome....
Maybe it is simple not working temperature/humidity compensation? But in this wide range I don't want to believe it...
(compensated IAQ have same graph)
Thanks,
Michael
