RE: [CAD_CAM_EDM_DRO] Windows PC as CNC controller

Thank you all for your response. I see that more detail would be useful.

>Why bother re-inventing the wheel when it has already been done rather well

with TurboCNC or Mach 1, 2 or 3?

>Unless of course you are doing just for fun.

Well, it IS fun, but I'm trying to design a machine that is more of a leg,
than a wheel. Among others things, I'm using struts for the XY plane. Who
can control struts?
Mach will not handle struts for XY. Is that Right?
TurboCNC is priced right. I already have TurboCNC, and am running it on a
traditional 3-axis mill. It won't do, because I'm spoiled by FlashCut,
which has a lot of useful graphics.
EMC has addressed the Stewart machine - this is a fact. But waiting until a
Linux machine is avail to sort that out.

Windows interrupt rate of 1.2Mhz is kind of funny. Apparantly windows give
you the choice of 10ms or 0.8 microsecond interrupts. Of course, 1.2Mhz is
much to fast to do serious calculation, but you can run a counter to divide
it down to something more useful, then launch a ISR of your own. The Tridea
2axis drafting machine ran quite smoothly and quickly on 120 Hz interrupts
which was derived by zero-crossings on the AC power.

But I haven't seen any stepper motor drivers which take velocity and return
position. Have you?