About zrummler

I needed to recompile the software because I bought an ADAFRUIT_FEATHER_ESP32_V2 board. More flash, more RAM but different mapping of the GPIOs. No problem at all if using the right board definition with the correct pin remapping, but theese needs a recompiling. ... View more

Hi zrummler, You can run the sensor API and example code of BME688 and use the standard heater profile to observe the changes in gas resistance values. ... View more

Hi gdm528， We recommend that you use a standard heater profile, as shown in BME AI Studio: If you want to use a custom heater profile, based on our experience, for temperature, it's better to set from 200 to 400, and for duration, it's better from 30 to 4032ms. Refer to document https://www.bosch-sensortec.com/media/boschsensortec/downloads/application_notes_1/bst-bme688-an001.pdf to set temperature and duration of heater profile. ... View more

Hi zrummler, Stability is internal to sensors, while calibration is specific to software algorithms. If you are not using the BSEC algorithm, calibration only makes sense for your algorithm. Sensor to sensor has a resistance value error of ± 15%, even in the same environment. ... View more

Hi zrummler, There is a 15% difference between sensors. Calibration is relative to algorithms, and if you do not use BSEC, there is no calibration. It means calibration should be done by your own algorithm. ... View more