Construction

![Alt text](https://g.gravizo.com/g? digraph G { aize ="4,4"; RaspberryPI3 [shape=box]; RaspberryPI3 -> Speakers [label="Wlan/BT/Kabel/AUX "]; RaspberryPI3 -> ExtendetBox [label="Wlan/BT"]; RaspberryPI3 -> USB [label="128GB*4"]; GUI [shape=box]; RaspberryPI3 -> GUI [label="Wlan/BT"]; } )