> > On Mon, 2009-03-09 at 11:25 -0700, Peter C. Wallace wrote: > ... snip > > > > Take a look at the Austria Microsystems chips > > > > They have 12 bit magnetic absolute encoder chips less than > ~$10.00 AFAICR > > Dooh, now I remember, I brought this up before and you mentioned this > encoder. I seem to recall that it should work, but they > weren't shipping > to the US or something like that. I'll check again. Thanks. > > Kirk
Those chips need a special magnet; a disk, but magnetised perpendicular to the normal direction. I think this is listed on their site, and where you can get them, but the seller of the magnets has a minimum order of $100 or so (from memory). The same chip and magnet is used by the reprap project to add cheap encoders to the geared hobby motors they sell. You can buy the kit with chip and magnet from the reprap store for $20 - http://store.rrrf.org/index.php?main_page=product_info&products_id=80 ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
