Can I subscribe to weatherdata?

[Rainer Halanek]

Hi,

I want that in a certain weather condition, e.g. wind > 50 km/h I switch a relais to turn something on or off. To write the code for switching the realais, I have everything I need. But this code needs as an input the wind speed. Can my program somehow subscribe to Weewx and get the wind data constantly?

Thanks, Rainer

[vince]

Output your data to MQTT and have your code subscribe to MQTT for that topic.

[michael.k...@gmx.at]

You can install https://github.com/weewx/weewx/wiki/mqtt and subscribe to e.g. weather/loop (or whatever your topic is) and extract windSpeed. You will receive windSpeed every time your hardware send loop data to weewx. With my WS-2810 this would be about every 3 seconds, my weatherflow tempest provides windSpeed every 3 seconds. Your switching device need to be mqtt enabled, you need a broker as well.

Other than that there are several other ways to let weewx do something when specific loop data arrives.

[Rainer Halanek]

Thanks for the quick and very helpful answers!

Cheers, Rainer

[michael.k...@gmx.at]

"With my WS-2810 this would be about every 3 seconds" => make that 30 seconds :)