now thing that's bothering me is how to wire this up.
at the moment it is simple, loop with one Dc controler.
When I add the inner loop i'll need a second controller, no problem.
insulate at the points where the loops meet and run 2 trains no problems.
the sidings off to the shed and where i want to put a fuel point are my problem.

a third controller?

how to do it?

last time i did this was with Zero 1 so have rough idea what to do for DCC so will probaly wire for this for when i take the plunge and convert to new chips

in the interim need to figure out point motors and make a plan on how to do these, all ideas gratefully received.

Also I'm unsure about things like wire gauge and what cable to use.
What is the best wire to use?

multi strand?

solid core?

With loops I don’t need a bus ?

must get some better pictures to show what i'm trying to do.