I have now found an electrician who will hopefully be starting work at the end of this month.
The plan is to upgrade the power from the house to the garage and then to run power from the garage up to the Pin Shack. New MCU's will be installed in both the garage and the log cabin. I am also taking advantage of the work taking place to add external electrical sockets and additional lighting in the garden.
Click images to enlarge.
"The ArcAde"
The electrical layout:-
A 3D model of how I expect the games room to look when it is fully completed :-
A short video walk through...
The Pin Shack
The electrical layout:-