Fine Offset WH24 weatherstation via RTL_433 only shows temp./humidity

[kfeelders]

.
Did an update to V4.10848 (from V4.10826) and now again i have no more Fine Offset WH24 sensor (neither temp.
not hum.) detected.

Same as when going to V4.10821, see 5 posts above.


Kees

[devros]

.
Did an update to V4.10848 (from V4.10826) and now again i have no more Fine Offset WH24 sensor (neither temp.
not hum.) detected.

Same as when going to V4.10821, see 5 posts above.


Kees

yes my weather station updates are gone too (with owl energy sensor updates)
basic rflink temp is ok

[kfeelders]

.
Did a complete power off and this brought back the WH24 sensor, temp and hum only still.

Kees

[kfeelders]

.
Now running on V4.10856 (beta) but still Rtl433.cpp is missing these:

wind_dir_deg (not included)
uv (not included)
rainfall_mm (not included)
wind_speed_ms (not included)
gust_speed_ms (not included)
uvi (not included)
light_lux (not included)

Kees

[kfeelders]

.
I editted the Rtl433.cpp under Dev-domoticz/hardware to include these headers:

wind_dir_deg
rainfall_mm
wind_speed_ms
gust_speed_ms

I used the already in Rtl433.cpp available wind_direction, wind_speed, wind_gust and rain statements.

Not changed yet are these headers:

uv (not included)
uvi (not included)
light_lux (not included)

as they are not available in the original Rtl433.cpp file.

I tried to recompile Domoticz using these commands:

cd dev-domoticz
git pull
make

result ended with:

[35m[1mScanning dependencies of target domoticz[0m
[ 20%] [32mBuilding CXX object CMakeFiles/domoticz.dir/hardware/Rtl433.cpp.o[0m
[ 20%] [32m[1mLinking CXX executable domoticz[0m
[100%] Built target domoticz

But after reboot, i was back to Domoticz level V4.10769 (offering met the beta update V4.10856 on which i was)
and still no extra sensors (wind speed, rain etc.) seen.

After re-updating to beta V4.10856 same result.

How do i know that the modified Rtl433.cpp file is active?

Thanks, Kees

[kfeelders]

.
I did a new domoticz recompile using:
https://www.domoticz.com/wiki/Raspberry ... rom_source
from "Domoticz Source"

but now inbetween the "cmake..." and "make" of:

cd dev-domoticz
git pull
cmake -DCMAKE_BUILD_TYPE=Release CMakeLists.txt -DUSE_OPENSSL_STATIC="NO"
make

i editted Rtl433.cpp to include the wind and rain data presented by the WH24 like:

wind_dir_deg instead of wind_direction
rainfall_mm instead of rain
wind_speed_ms instead of wind_speed
gust_speed_ms instead of wind_gust

Now the recompile process toke much longer and included many objects, not sure why the difference with yesterday.

Anyway, after reboot, it now "sees" the wind (direction, speed and gust) data and rain data from the WH24 weatherstation, see picture.

Not sure if the wind data is accurate as it shows 10 /12 Beaufort (converted from m/s) windspeeds which seems somewhat "over the top" (8 Beaufort max.).

But its a start, now trying to "add" the UV, UVI and light (lux) data from the WH24 into Rtl433.cpp.

By the way, after recompile, i am now on V4.10891.

Kees

[kfeelders]

.
Concerning the "over the top" wind strengths measured yesterday (12 beaufort etc. while it really was max. 9 beaufort).
i found out that normal windstrength measurements are done on 10m heigth.

As this WH24 weatherstation is placed at about 20m heigth, there needs to be applied some corrections / offset.

I found this table on a Dutch website showing the (rough) relationship between windstrength (W in m/s) and
heigth (h).

It shows that at 20m heigth, the windstrength is about 33% higher then at 10m.
So my 33 m/s (12 Beaufort / huricane force) windstrength should be lowered by 33% meaning 22 m/s.

This is much more realistic (22 m/s = 9 Beaufort).

So is there a way to set this 33% offset of the windstrength somewhere?


Thanks, Kees

[kfeelders]

.
Sigh....., i updated to V4.10893 beta, and now the WH24 wind and rain sensors are gone.

The Rtl433.cpp file still shows the modifications i put in, but they obviously are not "in" Domoticz anymore.

Need to recompile Domoticz again and stay away from updates.

Well, i needed to remodify Rtl433.cpp anyway to implement the WH24 UV, UVI and light_lux sensors.


Kees

[kfeelders]

.
I editted Rtl433.cpp again to also "look" at the available UV, UVI and Lux data and added the SendUVSensor
and SendLuxSensor.

After recompile Domoticz it showed the both sensors and after some fiddling it seems to contain accurate
UVI and Lux data, see picture.

Now waiting for a sunny day....


Kees

[maximus2019]

So is there a way to set this 33% offset of the windstrength somewhere?

Did you find a way to do this? Recently managed to compile 4.11807 after amending rtl433.cpp but like you I'm seeing exaggerated wind speeds, apparently 13 mph winds translate to 46mph!