Outdoor power using light socket

[rin67630]

If you have a 13a switch socket in you hall way near the porch door. You could use a power adapter
to feed your project, This you could do your self. You will not be breaking any regulations
A 12vdc 2/3a Adapter should do the job If you have a socket in a room upstairs near the front
door you could use that, drill a small hole near the skirting board for the cable, You should have
no problem extending the adapter cable

+1 on the above much safer option use 12v DC power supply and then in the project box outside fit a 5v buck DC-DC converter that way you will have no problems with any volt drop over the cable run ( unless its really excessive ).

Many of us have old unused laptop power adapters providing 19V@3A.
It's a good opportunity to use one of them.