I purchased a Faro Arm Gold many years ago for a particular project. The claimed resolution was either +- .004 or .006. Horrible. Could not use it for the project. The new ones seem to be much better. An old cheap one would probably be useful only as a learning device and not for use as an inspection tool. Even the new ones need special handling techniques to return accurate data.
On Fri, Aug 17, 2018, 7:00 AM John Figie <[email protected]> wrote: > Yes figuring out the encoder interface would be the most work. It dosent > look like there are enough pins for 6 axes of sinusoidal quadrature signals > plus index. So it could be all digital interface. I wonder what the typical > acuracy and resolution is? Yeah now that I think about it more it seems > like quite a project. Would probably have to disassemble a joint to see the > encoder. > > John Figie > > On Fri, Aug 17, 2018, 6:28 AM andy pugh <[email protected]> wrote: > > > On 17 August 2018 at 12:11, John Figie <[email protected]> wrote: > > > > > I live about 1.5 hours from Madison. I had to look up what a Faro arm > is. > > > It looks interesting and may be a better way to probe an object than > > with a > > > touch probe in the milling machine. Why do think this is "quite a > > project"? > > > It seems straightforward to me. > > > > It uses a number of encoders in the joints to calculate the position > > in 3D space of the tip of the arm. > > WI don't know the encoder type, they might be serial or quadrature. > > You need to know the kinematics geometry in some detail to accurately > > calculate the position from the encoder data > > > > > I am interested in finding what you want for it. > > > > So far I have spent US$415 / UK£327 getting the arm from eBay to > > Madison. I would like to get all or most of that back. > > Original advert: https://www.ebay.co.uk/itm/192086672011 > > > > -- > > atp > > "A motorcycle is a bicycle with a pandemonium attachment and is > > designed for the especial use of mechanical geniuses, daredevils and > > lunatics." > > — George Fitch, Atlanta Constitution Newspaper, 1916 > > > > > > > ------------------------------------------------------------------------------ > > 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 > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > ------------------------------------------------------------------------------ > 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 > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
