Amazon Echo Dot Cupboard mount

This thing is to mount the Amazon Echo Dot on a cupboard in our bathroom. The original had a very nice design, especially by having only a slim rim around the dot. I remixed the original design because I needed to connect a power supply and an audio cable. The audio cable is needed to connect to an amplifier with separate loudspeakers.

The 3.5mm plug is quiet long so I needed a two set design which is different from the original.

Mounting the Dot is supposed to work in the following way: