Michael Haberler wrote: > Actually I think there's a huge market for $5 CPU's being able to drive > precise motion without much further ado, but it might not be the > retrofitting/classic CNC control market > Yes, I had a need at work for a box to control a stepper motor to run a set of samples back and forth in a particle beam. It needed to home to index, then accel-cruise-decel a set number of steps for each sample, wait for a time set by thumbwheel switches, and repeat for a number of samples set by thumbwheels. When the required number of samples was processed, then go to the beginning. It also showed the state machine state in an LED and the sample # on an LED, and reported the sample # as an analog value. I did this all with one FPGA, and in fact it could probably have been done with one of the small Xilinx CPLDs as well.
Obviously, a good job for a micro, but I have boards for FPGA interfacing, so I did it with that. Jon ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
