> I wonder how a hall effect might work, to sense the chucks jaws going > by when it gets too close? I think I'd boost the length of its output > pulse with a one shot to make sure its triggering wasn't missed though > when the servo thread is the only one, no base thread to read it every > 30 microseconds. Cheers, Gene Heskett
Oh, I see, you want to sense the chuck jaws themselves. That leaves the sensor in a very vulnerable place, right in the firing line for coolant, swarf etc. What is wrong with having a switch on the saddle that trips when it hits an adjustable stop? It works quite well and is a lot less vulnerable. Les ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
