cross correlating gas sensor against an MQ135 and an MQ7 on an arduino hooked up to raspberry which both cross correlate (same response curves different names) the stepping drops that I mention fits with the plot of both analog gas sensors… so the stepping ranges I mention seem correct!
but bme680 definitely different gas responses (says not co2 sensitive) some dips/rises where no correlation, wondering if the bosch know that at different heater profiles it responds to different gasses in a known proportion…
The BME680 is running on a separate raspberry in a slightly different area of the same room. BME rises for better air quality, analog sensors rise for poorer air quality. BME Stepping makes it not that conducive to easy graphing… But sure you can all see they mainly match.