On Nov 3, 2011, at 12:54 PM, doug metzler wrote: > I could see a small circuit on the slave side that automatically drove > the stepper on that side
…"servo" you mean :-) > until it was aligned with the laser. but only > operates right before the homing sequence starts - so the first step > is align the slave side, once it's aligned relinquish control of > step/dir back to EMC and then start homing as normal. > > the circuit would have 3 laser sensors attached to ADC's on a > microcontroller and would drive until the center sensor registered the > highest reading and the outer two approximately matched. We already do this first part without frickin' lasers (Austin Powers - Dr Evil reference). It is the "start homing as normal" part that is easier said than done. EMC doesn't know how to a home a multi-jointed axis. -Tom ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
