One use I can think of for a low precision sensor is that you should be able to home faster. The motor can run at full speed until it gets close then slow just before it hits a mechanical switch. For this use case 10% error is good enough.
On Wed, Aug 9, 2017 at 9:40 AM, Stuart Stevenson <stus...@gmail.com> wrote: > Hi, > > Positioning the laser with magnets seems like an invitation to disaster. > The laser WILL get bumped or jiggled out of position. Hopefully, the out of > position would result in the machine not moving instead of moving to the > wrong position. > > Using the laser to establish rough position (therefore eliminating the > need for a limit switch) to allow homing from the startup position seems > "reasonable" if you can determine the laser position is repeatable enough > to catch the encoder index mark on the correct rotation. > > To me, if you plan to home the machine, this sounds like a solution in > search of a problem although I don't know the complexity of installing > limit switches. > > thanks > Stuart > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users