Easy to print Raspberry Pi and (optional) buck converter case for clean mounting on a Prusa MK3S.
Everything prints flat with no supports and should fit together nicely without too much trouble. The case mounts to the back of the MK3S frame in existing threaded mounting holes and the extra screws provided with the printer can be used. It is a bit of a pain to get the screws in place and tightened down, but there weren't great options in terms of existing hole locations.
The design was laid out to fit this buck converter, but use it or any other converter at your own risk. I take no responsibility for damage to, or problems with, your Raspberry Pi, 3d printer, or anything else as a result of your modification of things. If you're not comfortable with going that route the case will work great with a USB cable and power brick.