Pi Stack

This is my interpretation of a Pi Stack. I wanted to use the existing case design by 0110-M-P (https://www.thingiverse.com/thing:922740), but I wanted to stack several Raspberry Pi computers for experimenting with cluster technology. I also wanted to add an Ethernet hub and power supply to make it truly mobile. I chose an Ethernet hub to make it easier to take the stack on the road (no monkeying with WiFi addresses, etc).

I've included all of the files needed to build a stack as tall as you w