WeatherFlow Weather Station (Tempest) integration into Homematic

[omicronCZ]

I own a great weather station Tempest (first generation WeatherFlow, https://tempestwx.com/station/2867) and I would like to integrate it into Homematic.

According to the map (https://tempestwx.com/map/49.7549/10.4229/8) there are a lot of these stations in German-speaking countries, also elsewhere in Europe (where the Homematic system is sold), maybe there would be someone handy who would proved such integration into CCU2 / 3.

Today, I obtain data from the WeatherFlow (Tempest) station to Homematic by detour via the Weather Underground service (for which there is a script for obtaining data from W.U.), but it is slow, and important changes such as wind and rain arrive in CCU2 with a delay.

However, WeatherFlow (Tempest) has an excellent API of its own, and the station sends important weather data very quickly - so it should not be for someone familiar with Homematic scripting to obtain data this way directly, using a clever script.

Thank you very much for any help.

[NeoCH]

Hi
As you, I always track in the forum (mainly the German part) if there is someone who has managed to integrate a Tempest weather station (https://weatherflow.com/tempest-weather-system/) in Homematic. Tempest offers all the possibilities I expect from a modern weather station, especially the ultrasonic wind sensor and the haptic rain sensor are very convincing to me, because they do not have any moving parts. I also saw that the query via API should work. However, I am not able to write an appropriate script myself.
There is another problem, the station is not yet officially available in Europe.
We need a source to order the station (with European power supply 230V and approval) and someone to write a script or CUxD integration.
If somebody can help or find a solution, I would be extremely interested, too.
BR
Beat (neoCH)

[MichaelN]

Have a look at my Accuweather Script in the signature. If the output of your API is not too complex it should be able to use by adapt the parameter.

[omicronCZ]

Hi Michael,

thank you for your response.

Here is a description of the WeatherFlow API, I personally do not know Homematic scripts, so I would definitely welcome the help of someone else experienced.

Have a look at my Accuweather Script in the signature. If the output of your API is not too complex it should be able to use by adapt the parameter.

[omicronCZ]

I tried to play with the WeatherFlow API a bit, this is what the command for
"Get the latest most recent observation for your station."
Looks like, which returns the required data:

Code: Alles auswählen

https://swd.weatherflow.com/swd/rest/observations/?device_id=[your_device_id]&token=[your_access_token]

And this is what the returned result looks like:

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{"station_id":1234,"station_name":"Bleiberg Tempest","public_name":"Bleiberg Tempest","latitude":xx.xxxxx,"longitude":xx.xxxxx,"timezone":"Europe/Prague","elevation":700.0,"is_public":true,"status":{"status_code":0,"status_message":"SUCCESS"},"station_units":{"units_temp":"c","units_wind":"kph","units_precip":"mm","units_pressure":"mb","units_distance":"km","units_direction":"degrees","units_other":"metric"},"outdoor_keys":["timestamp","air_temperature","barometric_pressure","station_pressure","pressure_trend","sea_level_pressure","relative_humidity","precip","precip_accum_last_1hr","precip_accum_local_day","precip_accum_local_yesterday","precip_minutes_local_day","precip_minutes_local_yesterday","wind_avg","wind_direction","wind_gust","wind_lull","solar_radiation","uv","brightness","lightning_strike_last_epoch","lightning_strike_last_distance","lightning_strike_count","lightning_strike_count_last_1hr","lightning_strike_count_last_3hr","feels_like","heat_index","wind_chill","dew_point","wet_bulb_temperature","delta_t","air_density"],"obs":[{"timestamp":1608395185,"air_temperature":-0.5,"barometric_pressure":939.0,"station_pressure":939.0,"sea_level_pressure":1021.4,"relative_humidity":99,"precip":0.0,"precip_accum_last_1hr":0.0,"precip_accum_local_day":0.0,"precip_accum_local_yesterday":0.0,"precip_minutes_local_day":0,"precip_minutes_local_yesterday":0,"wind_avg":0.0,"wind_direction":0,"wind_gust":0.0,"wind_lull":0.0,"solar_radiation":0,"uv":0.0,"brightness":0,"lightning_strike_last_epoch":1599316508,"lightning_strike_last_distance":14,"lightning_strike_count":0,"lightning_strike_count_last_1hr":0,"lightning_strike_count_last_3hr":0,"feels_like":-0.5,"heat_index":-0.5,"wind_chill":-0.5,"dew_point":-0.6,"wet_bulb_temperature":-0.6,"delta_t":0.1,"air_density":1.19975,"pressure_trend":"steady"}]}

Could someone please process this into a Homematic script, which would write the selected returned data into Homematic variables?

[MichaelN]

Perhaps I could have a look on it tomorrow.

[omicronCZ]

That would be great Michael, thank you very much so far

[MichaelN]

OK, it not as easy as I thought, because it's not XML but JSON. So I need a complete new script.
You could check a first try:

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!WeatherFlow - Tempest auslesen
!V1.0 MichaelN https://homematic-forum.de/forum/viewtopic.php?f=49&t=63711
string url = "https://swd.weatherflow.com/swd/rest/observations/?device_id=[your_device_id]&token=[your_access_token]";
string rueck;
string error;
system.Exec("wget --no-check-certificate -O --timeout=10 - '"#url#"'" , &rueck, &error);

if (!rueck== "")
{
   WriteLine("HTTPRequest OK");
   rueck = rueck.Replace('"','');
   string Part; string Part1; string Part2;

   foreach (Part, rueck.Split(",") ){
           if (Part.Contains(":"))
           {
           WriteLine (Part);

           }
   }
} else {
  WriteLine("Error at HHTP Request");
}                                   

You have to edit the URL and put in the code in "Script testing" area of Programm section in the WebUI.
Then you should get an output like this:

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HTTPRequest OK
{station_id:1234
station_name:Bleiberg Tempest
public_name:Bleiberg Tempest
latitude:xx.xxxxx
longitude:xx.xxxxx
timezone:Europe/Prague
elevation:700.0
is_public:true
status:{status_code:0
status_message:SUCCESS}
station_units:{units_temp:c
units_wind:kph
units_precip:mm
units_pressure:mb
units_distance:km
units_direction:degrees
units_other:metric}
outdoor_keys:[timestamp
obs:[{timestamp:1608395185
air_temperature:-0.5
barometric_pressure:939.0
station_pressure:939.0
sea_level_pressure:1021.4
relative_humidity:99
precip:0.0
precip_accum_last_1hr:0.0
precip_accum_local_day:0.0
precip_accum_local_yesterday:0.0
precip_minutes_local_day:0
precip_minutes_local_yesterday:0
wind_avg:0.0
wind_direction:0
wind_gust:0.0
wind_lull:0.0
solar_radiation:0
uv:0.0
brightness:0
lightning_strike_last_epoch:1599316508
lightning_strike_last_distance:14
lightning_strike_count:0
lightning_strike_count_last_1hr:0
lightning_strike_count_last_3hr:0
feels_like:-0.5
heat_index:-0.5
wind_chill:-0.5
dew_point:-0.6
wet_bulb_temperature:-0.6
delta_t:0.1
air_density:1.19975
pressure_trend:steady}]}

If this works the next step will be to define an prefix for the systemvariables. Perhaps prefex="WF_"
And if you create a systemvariable like "WF_wind_gust" the script will put the wind_gust value in this systemvariable at the next run.
Is this what you expect? Then I will go forward.

[omicronCZ]

Hi Michael,

sorry, it returns :

Code: Alles auswählen

Error at HHTP Request

Im sorry, but before that I made a mistake in the correct command to request data, it should be correct (including my station code and test token):

Code: Alles auswählen

https://swd.weatherflow.com/swd/rest/observations/station/2867?token=2fdf9a5b-19a0-46e6-99b3-28d67f8cab44

You can try it yourself as a URL command in a browser, this works 100%

[omicronCZ]

Yes, I agree, that's ideal.

If this works the next step will be to define an prefix for the systemvariables. Perhaps prefex="WF_"
And if you create a systemvariable like "WF_wind_gust" the script will put the wind_gust value in this systemvariable at the next run.
Is this what you expect? Then I will go forward.