Andy Pugh wrote: > There are 12 outputs, so indeed only enough for the phases on a > 3-axis. I guess that you could hard-wire the amp-enable lines though > (And I didn't see any sign that Martin's drive had a separate one, it > might be built into some other part of the system) > > But yes, the pin-count of a single parallel port is rather too tight > for this application. PCI Parallel cards are reasonably cheap on that > eBay, though, and he should be able to try a couple of axes as a > feasibility test. > I have drawings on my web page (maybe these are too-well hidden) to convert standard step-dir signals to phase drive signals, in either full-step mode or half-step mode. See http://pico-systems.com/stepdir.html for these. There isn't too much wiring, if you know how to do wire-wrap. It might also be a perfect application for a Xilinx CPLD if you want to tinker with those.
Jon ------------------------------------------------------------------------------ Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
