Plantower 5003 readings not fixed everywhere

[Gabbar]

Hello,

I have an Airgradient One I-9PSL with a Plantower sensor number 5003-20231218.
It is connected to the Airgradient Dashboard and HomeAssistant.
The monitor is updated to the latest firware version: 3.1.21
I followed the instructions on this article https://www.airgradient.com/documentation/calibrate-low-pms-sensors/ to apply the correction algorithm to the values read by the sensor.

I can see that the values are now higher than the raw values in the AirGradient Dashboard, but the values on the Device screen are still the raw values and the values sent to homeassistant are also the raw values.

Please help, if I missed something.

PS: I did not flash upgrade the firmware version to 3.1.13 Release as mentioned on the initial setup guide, since the firware was automatically updated to v 3.1.21. Or am I still required to flash update? Or this is not related?

Thanks.

[Samuel_AirGradient]

Hi @Gabbar ,

After integration to home assistant finish, configurationControl config is set to local automatically by Home Assistant integration. Which means, every configuration that are changed on AirGradient dashboard will not be applied. To make the monitor able to apply cloud configuration, you can change Configuration Source on Home Assistant device config page to cloud.

And after you see the correction already applied on monitor display and home assistant, you can set it back to local if you want.

Or you can follow this steps arduino/docs/local-server.md at 3.1.21 · airgradienthq/arduino · GitHub if you’re comfortable using http client tools (like cURL).

[Gabbar]

Thanks that worked like a charm…!!

[Gabbar]

@Samuel_AirGradient thanks for the response. The configuration worked, but I noticed that the moment I applied the correction algorithm, the VOC count sky rocketed.

In this related?
Thanks.

[Samuel_AirGradient]

Please read this forum thread to know more about TVOC Measurement values for the AirGradient One TVOC readings? - #75 by MallocArray.

Is it possible you just do cooking or any other activities that made TVOC values change?

[Gabbar]

@Samuel_AirGradient Thanks for guiding me to the thread. After reading through it and several other linked ones… paid more attention to atleast a week of history.

I realised the spikes have been happening earlier, I just did not notice them. This time I noticed because I was looking for the changes after applying the correction for PM 2.5.
When I corelated the time of each spike… I realised that this is the time, I have been pouring myself a glass of whiskey and putting it next to the sensor on my table… 🤦🏽
Well… mystery solved. Thanks for efforts. Cheers…!!