Hi,
Thanks for your inquiry.
BME688 can be trained to detect specific VOC gases, but it cannot measure the level of the gasses. For example, you can refer to https://www.youtube.com/watch?v=4vdliMRtxBY about how to train BME688 to detect coffee using BME AI-Studio SW. But it cannot tell how strong the coffee is in the unit of ppm or ppb. It can only tell you "yes, coffee is present" or "coffee is not present".
Thanks.
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