On 06/10/2011 04:21 PM, andy pugh wrote: > On 10 June 2011 23:53, Jack Coats<j...@coats.org> wrote: >> They seem to support MACH3, but not apparently EMC2 (or at least not >> documented well). > It has a PWM input, so EMC2 control would be trivial. > > However, it is rather expensive, and duplicates on-board a number of > things that EMC2 would do for free. I have closed-loop PID control on > my milling machine using built-in EMC2 functions and a PWM output from > EMC2 to the motor drive. > > You should be able to use something like > http://grizzly.amazonwebstore.com/Grizzly-G3555-Router-Speed-Control-20/M/B0000DD1R4.htm?traffic_src=GB&utm_medium=CSE&utm_source=GB&id=uk > (Mainly as a cheap source of pre-assembled parts) with EMC2 PWM and a > very simple interface circuit taking the place of the potentiometer. >
I noted a very similar looking controller at Harbor Frieght for $19. Has anybody hacked on one of these to drive the pot from EMC? Once I finish getting my mill basically operational, a router speed controller is next on my list. For now, of course, I could just rig up some sort of tach and twiddle the pot by hand to the the desired speed, but... -Pete ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
