Hi, it's this breakout board:
http://www.zappautomation.co.uk/zp5aint-p-499.html

It's being run from a regulated 5v supply, I don't know if it has a charge pump
Didn't have time to recheck all of my wiring but i'm going to have a fiddle tonight.

Some good news though, my spindle arrived today! Seems excellent quality and I can't wait to get it fired up after i've configured it. Does anyone put anti freeze in their water to aid in cooling/ add corrosion resistance?

Cheers, Joe