The advantage of this driver seems to be only that it is connected via SPI. Driving very small moters over SPI seems to me to be a very specialize use.
On Sat, Aug 25, 2018 at 10:09 AM Gene Heskett <ghesk...@shentel.net> wrote: > On Saturday 25 August 2018 07:54:00 gru...@manlymail.net wrote: > > > has anyone tried this > > > > https://www.sparkfun.com/products/13752 > > > > > 1. Its too costly, and too small for the motors I've generally used, as > the much more capable 2m542 is easier to control, can't be killed by a > wiring error, albeit with less smarts about motor errors, is only about > 5 bucks more. I won't say its bullet-proof, but in over a decade of > using them, every one I've bought is still doing its job. 11 of them > IIRC. > > 2 We'd still need to source all those connectors and install them, losing > the price advantage this has over the higher rated 2M542's. > > 3. Peter could probably write a driver for the 7i90HD to make it daisy > chain to the multiple cs spi buss this needs. > > 4. after my experiences with the similar Allegro chips on the xylotex > boards, blowing for no detectable reason, I'm spooky about a single chip > solution. Particularly since theres no mention of a heat sink. I > personally think Jim's board is a good design, for nema 17 and smaller > motors, but its a balancing act between its overheating at voltages > below 24, and its 35 volt or so self destruct. This one may be better, > but just interfacing to a bunch of them looks to be expensive ATM. > > Besides, I'm up to my butt just trying to drain my local swamp. > > > ---------------------------------------------------------------------- > >-------- 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 > > > > -- > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury, and ammo. Please use in that order." > -Ed Howdershelt (Author) > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > ------------------------------------------------------------------------------ > 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 > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ 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
