mansardenbaron Yes, the CCS811 heater can add easily up to one degree C. It could be a feature, if you want to see an effective local temperature for compensation of some effects on the CCS811. If not, it's a bit of a design drawback..
Risposta 04/02/2018aligeda The problem is that css811 draws about 54mA at 60mW and since they share the same PCB and ground plane the heat transfers to hdc1080. Don't use the hdc1080 for ambient temp and humidity. it gives wrong data, I fell for the same issue.
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