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About KEranda
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01-10-2021
01-22-2021
KEranda
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01-21-2021
02:40 PM
Hi Jet, Thanks for checking and apologies for my late reply. I understand, I’ll keep switching to a minimum to overall reduce the time the sensor is stabilising - I’ll assume this also means switching eliminates any existing ‘baselines’ and needs to ‘calibrate’ again in the new mode. I just have 2 follow up questions: 1) In the event that I do need to switch, what is the procedure in the code to do so – should I: Simply call "updateSubscription" with the new "BSEC_SAMPLE_RATE_..."? Or before this do I need to reinitialize as if it's turned on for the first time? i.e. with "begin(...)" & "bsec_virtual_sensor_t" & then "updateSubscription" commands? or... Do I need to soft-reset the BME680 before doing the above? 2) Are you able to expand on why the standard of good/bad air quality changed with the measurement frequency? Thanks a lot!
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01-10-2021
02:41 PM
Hi, I'm currently evaluating using BME680 + BSEC software and was wondering what the optimum way was to switch between LP & ULP (and vice versa) while the sensor & library is running. Can I simply call "updateSubscription" with the new "BSEC_SAMPLE_RATE_..."? or... Do I need to reinitialize as if it's turned on for the first time? i.e. with "begin(...)" & "bsec_virtual_sensor_t" & "updateSubscription" commands? or... Do I need to soft-reset the BME680 before doing the above? Ideally, I would like to keep the calibration data when switching e.g. calibrate quickly using the 3s mode then switch to the 5min mode after IAQ accuracy >1 is achieved. I had some concerns as the integration guide mentions: "To achieve best gas sensor performance, the user shall not switch between LP and ULP modes during the life-time of a given sensor" Any advice would be great.Thanks!
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