Anet A8 Electronics Case+OrangePI Zero+Relay

As an Octoprint server, I am using an Orange PI Zero which has got some advantages over a regular PI:
- It's small (about 4.5 x 4.5 cm)
- It's got WiFi
- It's dirt cheap (9$+PP)
I wanted to have a case which incorporated the A8's electronics, Octoprint server, a relay board and an external USB connector for a webcam (I like things tidy on the outside).
Since the OrangePI Zero does only have one USB (two more are on a daughterboard which I can't use since I have developed a board for connecting filament sensor and capacitive Z sensor), I had to incorporate a tiny USB hub as well.