More INFO:
https://hackaday.io/project/195228-streaming-audio-player-squeezelite
An audio streaming player based on PiCorePlayer OS (raspberry) with a volume control that controls the AV receiver via HTTP.
The volume control via the Arduino is necessary because I also want to control the volume (like for all other devices) via an AV receiver.
So that the display does not run permanently, a relay is installed which is controlled via my smart home (openHAB) via HTTP (cgi script -> PiCorePlayer)
The author marked this model as their own original creation.