Physicist trying to do engineering. Not going well. After advice with 4 axis gantry.

[Clive S]

Only letters could put after my name are "NFC" or "CFS" but Hope that helps expalin little more.

What's wrong with DCM (don't come Monday)

So with only 3.6v there not enough difference between Hi - Low signals and just slight difference or drop in voltage can cause missed steps and all sorts of strange happenings.

That's why as you know you need a bob with a level shifter to bring them back to 5V or a decent motion controller.

[cropwell]

That BoB is a Larff innit ! £16 for a D25 to screw terminals connector.

A chinese 5 axis BoB will do isolation, spindle control, coolant relay all for a small Bank of England drinking voucher. I wouldn't put that connector board anywhere near my computer (apart from the bin next to it).

Cheers

Rob (if you want the letters behind my name it's 'F. in B.;VD and scar')