So far with thanks to some tips from 'sweep' and the drive interface diagram provided on here by David Murray I have managed to get all three axis moving via Mach 3.

Now I decided to buy a C11 breakout board (cnc4pc) to protect the pc, charge pump function and hopefully take care of the spindle and datums etc.
So far i have this wired up to the drives via the interface board. The breakout board requires an additional 5v dc at 1.5/ 2 amps. At the moment i have just hooked up a seperate power supply for this, but I want to run this from the triac power supply.
I am no electronics whizz, so now my question!!(s)
Where do i get the 5v from on the Triac??
Do I also need to keep the main triac board to use as the power converter/distribution. Ideally i would like to take it out, but if it is easier to use it 'as is' just for the power then i will. Obviously I can unplug all external wires which i would no longer require, vdu, front panel etc etc.
Thanks in advance, Roy