Fingers crossed it'll cut ally

[blackburn mark]

Wait a second. I can just make you one using a PIC ... it'll save you buying one and you won't have to modify it.

If you just measure the voltage at the point I said earlier. Remove that resistor (R32), remove R31 and connect the parallel port pin to where R31 connected to the potentiometer, then set spindle in mach3 to highest, adjust the pot so you get the same voltage as measured at R32 earlier. Put R32 back in place and do not move the potentiometer ever again otherwise the microcontroller will probably break.

Measure that voltage, if it's ok then I'll scribble a diagram over the picture you posted.

It would be good if a moderator could split this thread up to save duplication? If not then I'll start a new one about the spindles.

great stuff, ill get on it as soon as i have time :)
ill probably buy another servo controller so i can run the spindles without mach and for a backup in case i fry the one iv got