I received my Raspberry Pi and decided I needed a case. I didn't have much available to me in terms of laser cutters, 3D printers or woodwork skills etc. so I thought laterally. I'd previously had the idea of using the Pi as an emulator so I thought, "why wouldn't a Pi fit in a Mega Drive case?". About an hour and half later of taking my old Mega Drive II apart and thinking about the best ways of keeping everything tied down I had a very neat case for my Pi with (sort of) integrated USB hub.
For this Instructable you will need:
A Raspberry Pi with SD card inserted and OS installed (if you want to be pre-emptive with your case a credit card will help you see how it all goes together in place of the Pi),
A Sega Mega Drive/Genesis II (See the second picture if you're unsure which version you have),
A screwdriver that can undo all of the screws on the console (they're all the same size),
Some sticky tape,
A micro USB cable and power adapter for your Pi,
An HDMI cable, the thinner the better (or an RCA connector cable would work too),
(Optional, although highly recommended) A 4 port USB hub which is no wider than 105mm (about 4 inches), no taller than about 9mm (0.35 inches) and ideally no more than 30mm deep (1.2 inches). I used an old Kensington one. If it has a short USB cable attached, like mine, you may also want a USB extender cable.
USB Mouse and Keyboard (or any other connection type that you can get to work),
(Optional) Ethernet Cable.
Step 1: Dismantle your Mega Drive/Genesis
For this step you need to remove every screw you can see from your console (see video below for help), inside and out except the ones holding the cartridge bay to the top of the case (see picture 1),unless you want to of course.
Keep all the screws safe (see picture 2; I unscrewed 9 in total but the number and type may vary slightly by model).
I used this video to help me take apart my Mega Drive as it shows you where to look for all the hard-to-find screws. Ignore the bit after 2:40 where he starts soldering; this is unneeded.
In the end you should end up with (see picture 3):
2 pieces of metal,
2 shells of plastic,
a plastic bar and
a load of screws.