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August 10, 2021 at 10:09 pm #28961
Walker Angell
Participant

Something worth noting is that the original sensor you were using (Winsen MH-Z19) does temperature compensation within the sensor. The sensor you indicate is in my A3 and presumably others (Mixsen MIX6010) does NOT do temperature compensation in the sensor from what I can tell and so relies on this being done in code outboard of the sensor.

Given the inaccurate CO2 readings we get on our A3 and the unexpected fluctuations w/ temperature this makes sense.