On 16 December 2017 at 04:10, Chris Albertson <[email protected]> wrote: > If you can find an FHA drive then the servo and a very serious >> crossed-roller gear is included. >> http://bodgesoc.blogspot.co.uk/2017/05/harmonic.html > > > The guy who made the above video said he bought the 4" diameter harmonic > drive on eBay for about $200.
I paid $250 for the one in my blog post (Was it clear that the link was to my own 4th-axis project?) but then had to pay a bit more for postage and import duty to the UK. The integrated servo has a 6000 counts-per rev encoder and then a 100:1 reduction, so 600,000 counts per rev, or .0006 of a degree. -- 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
