On 15 April 2018 at 04:05, jeremy youngs <jcyoung...@gmail.com> wrote: > I'm thinking 7i43 ran by epp at > this time. I have a pair of servo motors with renco encoders and an > inexpensive hbridge (36v15a) . I've tried sorting through everything and > just seem to end up confused. I'm looking to get x/y under servo power and > get away from these steppers . The big issue for me is having to build the > timing belt drive mount and not desiring to do it twice as these servos are > roughly nema 42 and my steppers are nema 34 . > I'm basically looking at being expandable and controlling the h bridge > while keeping z stepper driven for the moment.
The 7i43 ought to work, but you would need some kind of buffering for the signals. When I was running a 7i43 with home-made breakouts I use the ULN2003 chip for the outputs, and that worked fine. (I connected the steppers drive input optos directly to the 7i43) -- 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 Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
