is my BM280 with problem?

[Aripaule]

hi,

Firstly, I would like to thank the creators for the project.

I have a possible problem with my bm280 sensor, as it is showing a pressure of around 900hpa, when it should be around 1000, as we can confirm from the data on the openweather website.

I would also like to know where the acquired data from openweather is shown in the interface (I didn't find it in the charts tab).

thank you very much!

[aaronwmorris]

Interesting. What is your elevation?

On the Admin tab of the config, you can configure the 4 custom charts to be the various sensor values.

[Aripaule]

my elevation is 1000 m above sea level.

and,

I found where to enable the graphics, are we limited to just 4 slots for now?

[aaronwmorris]

I have been reading that weather services will normalize the pressure measurements to sea level which is probably why you are seeing a difference. With an elevation of 1000m @ 15c, the pressure should be ~898 hPa which is pretty close to your measurement.

For now, it is limited to 4 custom graph slots.

[Aripaule]

hi @aaronwmorris,
as you said in "Sensors", mine is not showed with command i2cdetect too,
and also it seems to be connected in 0x29 like TSL 2591.

Could this cause any problems?

[aaronwmorris]

The problem appears to be your MLX90614. I would double check your wiring to make sure it is connected properly.

[Aripaule]

it worked! I redid the DUpont connections and the sensor appeared correctly.

Furthermore, do you know the unit of measurement for this SQM tab? is it mag/arsec²?

[aaronwmorris]

It is supposed to be mag/arcsec², but there probably needs to be more work done in this calculation.