@franzstein, so it sounds like WeeWX may be able to extend our support to netatmo which would be great news. I think you only need a very modest raspberry pi to do this, say, Pi Zero connected to your network wifi or Pi 2 if you want Ethernet connection. The Zero should have enough horsepower to run both WeeWX and a local Weather Service. You will need to specify the local Weather Service IP as either localhost or 127.0.0.1 in the weewx configuration file. The instructions are on the opensprinkler-weather github page. Let me know if you need any help.