On Tue, Aug 8, 2017 at 9:42 PM, Dan Bloomquist <z...@lakeweb.net> wrote:
> I have not set homing up on my mill yet, I've been mulling it over. A > switch is not satisfying unless there is a way to keep from hunting for it, > can't imagine... > > So it occurred to me to us a laser range finder. Then lcnc would know > where the table is without having to move on boot. It does not have to be > accurate like to mm as I probably never have to mill to the limit switches, > and even then.... > > So I started to look around out there, this is amazing for the price: > <http://www.ebay.com/itm/VL53L0X-Time-of-Flight-Distance- > Sensor-Breakout-GY-VL53L0XV2-Module-for-Arduino-/201718280643> THey claim 1mm accuracy in measuring light time of flight. I doubt that: it would require measuring time with a 3 picosecond accuracy, in other words requiring ticks of a 300 GHz clock. I am sure they do some sort of phase measurement, which is by definition sloppy, which is why they apparently claim 10% accuracy. ------------------------------------------------------------------------------ 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
