Echo Dot 3 wall mount - behind the wall wiring

I liked Mr. Freakman's design, but wanted the volume buttons oriented so Plus was on top and Minus was on bottom. Added some through-holes for my particular wiring setup, and added a third "prong" to hide the wire.

I had to buy my own charger tip (4mm barrel plug, from Amazon) and and add it to some old wiring from a (now unused) security system in order to fit the wire behind the top prong - this will not work with the Dot's stock charger.