I don’t enable automatic calibration on my SCD30 because the algorithm basically assumes that the lowest ppm in the last 7 days is 400ppm and baselines to that.

I don’t enable automatic calibration on my SCD30 because the algorithm basically assumes that the lowest ppm in the last 7 days is 400ppm and baselines to that. I just took mine outside once, set that to 400ppm and haven’t recalibrated it since. The drift on the sensor is supposed to be very low.