routercnc_MK3

[Jonathan]

Here is a circuit I've drawn up but need help with:
1. Toroid blue and brown I assume are mains input?

Likely yes, but it should say on the transformer itself.

2. 4 output wires are from the pair of windings? - but which to connect to the regulator and in which order?

The capacitor arrangement you have is intended to obtain a positive and negative voltage, not the single supply that you require. To use the board as-is, you could connect both secondary windings in series to AC1 and AC4, but you'll then have 3 capacitors in parallel with two in series, so only 10000*3/2=15000uF. That may be sufficent ... but it's a bit of a waste when you could modify the board to have all 6 capacitors in parallel to get 60000uF.