My board will be ready in September, for those of you who are interested:

Features:
· Onboard high voltage regulator (70V Max)
· Dual power supplies;
o One 5V DC for the Parallel Port associated logiclevel circuitry.
o One isolated 12V DC to drive port-opto circuitry.
· Integrated Charge Pump for added protection, withoverride jumper for testing.
· Full optical isolation of all inputs.
· Buffered 2x relays, rated at 10 Amps 240V AC.
· The user will be able to select from a further combination of;
a) 2 out of 3 comprising 1x 10A relay, Charge pump and 0-10V for Spindlecontrol.
b) Channel Y Step and Dir or Y Step and Relay no4 (10A relay)
· Opto isolators can handle step signals up to 40 KHz