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I found that the pressure which my WMR200 shows is dependent on indoor temperature.
E.g. indoor temp is 22°C, pressure is 1010 hPa. At 16°C indoor temp it shows 1012 hPa.

Is it possible to create a virtual sensor (thb1) to adjust this?
My trials with selectmaster and –slave were not successful, I didn’t check the right parameters. The example in the meteohub manual uses temp only.
I need a formula like this: pressure = pressure + (indoor temp -22) / 3

It would be helpful to know which parameters are required to use thb0 as trigger for a virtual sensor thb1.

Thanks for your help.

Doesn't anyone have an idea?

My problem is to find the right parameters.

I tried to define thb1 with the following parameters (no operation with the values):

selectmaster 5 300 | awk '{ printf ''%d %d %d %d %d %d'', $1, $2, $3, $4, $5, $6 }'
selectslave 5 300 | awk '{printf ''%d %d %d %d %d %d'', $1, $2, $3, $4, $5, $6 }'

This returns "1018.0° 100% 0.0mb (0.0mb) fc:0"
instead of "23.5° 25% 1018.0mb (1018.0mb) fc:4" which are the current values.

What is wrong with the parameters ???

No idea ???

Hi,

I've not really played with this, but what you are trying to do is wrong from an awk perspective:
This tells awk to expect 6 variables and display those as Decimal integers (that's what %d is telling awk).

If you just want all the variables back you can use:
or if you are really hooked to printf: If you want to do some formatting you can use the following printf format specifiers: Does that help?

Ysbrand

Hi,

thanks for your answer.
I'm not familiar with awk, so I only copied the examples from the meteohub manual
and expanded it because thb0 has more parameters than th0.
But why is "%d" wrong when I expect decimal integers?

I tried the codes which you recommended, in combination with selectmaster and -slave:

selectmaster 5 300 | awk '{ print $1, $2, $3, $4, $5, $6 }'
selectslave 5 300 | awk '{print $1, $2, $3, $4, $5, $6 }'

and

selectmaster 5 300 | awk '{ printf ''%s %s %s %s %s %s'', $1, $2, $3, $4, $5, $6 }'
selectslave 5 300 | awk '{printf ''%s %s %s %s %s %s'', $1, $2, $3, $4, $5, $6 }'

but both gave NO results.

The code which I mentioned in my 2nd post gave results, but the wrong values.

cgn

HI,

I have no access to my test rig at the moment, so I can't try this, you will need to wait I guess.

But why is "%d" wrong when I expect decimal integers?

All of the values are not really integers when you look closely:
23.5°: is a real and a trailing character: °
25%: is indeed an integer but has a trailing character "%"
1018.0mb: is a real and a trailing string "mb"
(1018.0mb): is a real with a character preceeding and a string trailing
fc:4: is indeed an integer but with a leading string

So, things are not really that straightforward. I guess that Boris' code expects indeed reals, which means that you will need to tear apart the numbers from the strings etc, not really straightforward.

Hi,

the awk instructions only use the raw data of the sensor which are without units.
E.g. "thb0 158 39 0019 10230 6 10230"
After computation with 'awk' meteohub displays the units like '°' or 'mb'.

The command awk '{ printf ''%d %d %d %d %d %d'', $3, $4, $5, $6, $7, $8 }'
returns the correct values: 15.8° 39% 1023.0mb (1023.0mb) fc:6 with their units.

After some further trials it seems that "selectmaster/selectslave" does only return one value,
so it's not usable to return all values from a combined sensor like thb0.