piCorePlayer, based on Raspberry 3, Hifiberry and Offical Raspberry 7' touchscreen

This is the modification of the very good initial thing by luc_e. I had to reverse engineer a bit to have more flexible object, I provide the result as stl and step files.

I added room for a Hifiberry DAC+ and increased the volume to reduce stress on the screen ribbon. I flatten a bit the rear of the screen cover to reduce time and material needed, while keeping reinforcment around the screw holes.

Just install piCorePlayer from https://sites.google.com/site/picoreplayer/home, use external