Hi,
we've been using the BME680 for an outdoor air quality monitoring project. Each sensor is enclosed in an IP67 case and a tropical effect spray has been applied to the PCB (covering the sensor with tape).
Everything has been working fine for several months, but recently 50% of our devices started measuring way too high gas values (read values above 10000000, usually used to be few thousands).
Other readings (pressure, temperature and humidity) are still ok.
The firmware is using the bsec_iot_loop(...) function with hot_plate_temp = 120 and hot_plate_time = 50.
What could be the cause of this problem and how can we fix it?
Thank you and best regards
