Max Oberberger and Alexander Zenger decided to realise a weatherstation with an Arduino Microcontroller. They wanted to measure temperature, pressure and humidity. It should be also possible to get every 5 min a value update on an external server.
The basic idea was to develope a weatherstation which is easy to use with different technologies (Smartphone, Internet, Microcontroller, ...). It should also be possible to add new sensors quite easy and adapt the station to your own needs.
Therefore they developed a weatherstation and a smartphone application to use with the weatherstation.