Reading IAQ value with BME680 Library integration

[Arvind]

Hi,

I am trying to integrate ESP32-S3 with BME680 using I2C. 

Currently I am observing changes in Humidity, Temperatures but IAQ value is not changing. We tring blowing air near the sensor.

Is there a way can i verify BME680 sensor library without sensor.

Please let me know how shall validate the IAQ values i am reading from the sensor. 

For reference i have attached screenshot of sensor values read.

[BSTRobin]

Hi Arvind,

Could we know which example code you run?

[Arvind]

i have taken the example from The BSEC Software | Bosch Sensortec (bosch-sensortec.com).

bsec_1-4-9-2_generic_release library was used & bsec_iot_example.c example i have taken.

[BSTRobin]

Hi Arvind,

How long has your sensor been running?

In the first 30 minutes, the change of resistance value is not obvious.
The IAQ value obtained within 8 hours is not credible, and it can be obtained after more than 8 hours
After 7 days, based on similar baselines, the output value of different sensors in the same environment should be within the scope of the specification, ± 15+± 15%.

[Arvind]

Hi BTSRobin,

Thanks for information. While i am testing with BME680 sensor, I am observing that run_in_status is becoming 1 only after 4 minutes & after that only i am able to get variation in IAQ & other gas values. Is this an expected behaviour?

Also currently i am not focussing on temperature values read from the sensor. Is there a wait time before reading temperature value from the BME680?