Hi Sir, Thank you, the virtual sensors for bVOC and CO2 were not enabled. I used the default settings from the BSEC basic IOT example. Now I get 500ppm for CO2 and 0.4 for bVOC. 1. Can you tell me what аrе the boundary values for bVOC and CO2? 2. Can you tell me at function bme680_bsec_process_data(), about static_iaq_accuracy, co2_accuracy and breath_voc_accuracy: shall I use corresponding value only when corresponding accuracy is 2 or 3. Are these accuracy values related to AQI accuracy? Thank you very much and wish you good weekend! Martin
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