Monitor der PV Anlage
Speicherung der Wetterdaten von openweathermap.org für Cloudiness, Temperatur und WetterId und Wetterbeschreibung in den Channel Status
WetterId Bedeutung siehe http://openweathermap.org/weather-conditions
The Raspberry checks the temperatures and controls the water tank. If the water is too colt for the bathroom, heat it up. The raspberry has solid state relays to switch the heating elements and the pump.