Hi!
I use a AC-DC converter to transform the 220 V AC we have here, to 12 V DC. This 12 V then goes into my power box. I have 4 anderson power pole outlets, to which this 12 V is just passed on. Then I have 2 microphone outlets (different so I will not mix them up in the darkness) connected to a small device (don't know the english name) that takes in 12 V and lets out something else that I can adjust - bought on Ebay for a few dollars at most. I set it to put out 7.6 V, which is what the Canon DSLR takes. Then there is a 12 V -> 5 V transformer, also from Ebay, very cheap, giving me 2 outlets of 5 V for the USB hub and the Raspberry Pi, that sits on top of the small box, controlling the mount and scope and everything.
It took me an hour perhaps to design the box, choose a plastic box and decide on the outlets, Then half an hour to find the things on Ebay, then a month for them to come from China, then an hour to solder it all together. Cost almost nothing. Works like a charm. What I really wanted, was a was to have a consistent setup independent on power source (AC or car battery).
Does it make sense?
Magnus