About kgoveas

Hi @lindzey , Thank you for the pull-request. Your changes have been reviewed and merged.  ... View more

Hi @maren , you may try to use the GitHub - BoschSensortec/Bosch-BME68x-Library: Arduino library for the BME680 and BME688 sensors from Bosch Sensortec. It however can only provide the raw values from the sensor without any processing of the BSEC library. I2C may not work at the moment as the Uno only supports 32 byte reads. There are active pull-requests to fix this however it is not yet merge. You may use that code as reference.  ... View more

Hi @jsayed , Does your configuration/setup look similar to the one attached? I tried your setup on a clean PC (without any previous installations of Development Desktop 2.0 or COINES). Can you please confirm the same with screenshots? Thank you. ... View more

Hi electro_bloom, Have you already seen the samples from Github?  Bosch-BSEC2-Library/examples/x8_board_examples/basic at master · BoschSensortec/Bosch-BSEC2-Library (github.com) There is a mini library called CommMux Bosch-BSEC2-Library/commMux.cpp at master · BoschSensortec/Bosch-BSEC2-Library (github.com) that abstracts the use of the IO expander to control the 8 sensors. The use of the library can be seen here : Bosch-BSEC2-Library/basic.ino at master · BoschSensortec/Bosch-BSEC2-Library (github.com) Hope that helps, Regards, kgoveas ... View more

Hi Sudeep1310, The temperature within the package is expected to increase with operation due to the heat dissipated by the gas sensor.  The bias stabiliizes depending on the operating mode and ambient temperature. This sensor heat can be compensated for with the use of the BSEC algorithm.  It is however strange that the gas measurement readings are so low. My intial guess is that the sensor might be contaminated and hence suggest reading the  HSMI manual.  Regarding the Status flags, it is a logic OR combination of the 3 flags, #define BME680_NEW_DATA_MSK UINT8_C(0x80) #define BME680_GASM_VALID_MSK UINT8_C(0x20) #define BME680_HEAT_STAB_MSK UINT8_C(0x10) and hence 0xb0 means that there was a valid gas measurement and the data is new (not a repeat), and the heater was stable. 0xa0 means that the heater was unstable for that measurement, basically signifying that there wasn't sufficient time to heat the gas sensor to the needed temperature. This is pretty common for a cold start and normally observed after a power on reset for the first measurement.  ... View more