Gene just Google the part number "VNH3SP30". Polulu has them. It is in fact my "go to" driver. These were developed for automotive use for things like driver seat adjustment motors.
Polulu's version of this has reverse voltage protection but they seriously de-rate the chip. Just read the datasheet that is linked from their site. Here is the way I used these... I buy a slightly different version of the chip that comes on an "Arduio Sheild" ebay link <https://www.ebay.com/i/401089386943?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=401089386943&targetid=934793863816&device=c&mktype=pla&googleloc=9031026&poi=&campaignid=10877149888&mkgroupid=107912403075&rlsatarget=aud-622524042918:pla-934793863816&abcId=9300400&merchantid=101638797&gclid=CjwKCAjw5p_8BRBUEiwAPpJO6-QTPa9wyIxLjU-wVv6qq8PaY8DUPaxrZw7TRhXg8XKzfNEiapIrIhoCidAQAvD_BwE> Then I buy a Nucleo board from STM www.digikey.com/...NUCLEO-F401RE <https://www.digikey.com/en/products/detail/stmicroelectronics/NUCLEO-F401RE/4695525?WT.mc_id=frommaker.io> These mate together with a bunch of 0.1" header pins. With some software in the STM32 I now have a USB connected dual motor driver that can handle up to about 20 amps peak and 12 A continuously The control PID loops run on the STM32 and I only have to send speed or position commands over the USB cable. It would be about as easy to assemble an Ethernet or SPI connected motor controller from these same parts. The stack-up is a little bulky but it is so easy to do and cheap I can put up with the excess cubic volume. On Thu, Oct 15, 2020 at 9:12 AM Gene Heskett <ghesk...@shentel.net> wrote: > On Thursday 15 October 2020 08:32:07 Roland Jollivet wrote: > > > Maybe this is good for you, if available locally; > > > > https://www.olimex.com/Products/Robot-CNC-Parts/MotorDrivers/BB-VNH3SP > >30/open-source-hardware > > > I give up, none of the 3 USA distributors are carrying that item. > > > On Wed, 14 Oct 2020 at 22:42, Gene Heskett <ghesk...@shentel.net> > wrote: > > > After it finally was delivered, testing looks good but now I need a > > > controller, smaller and lower voltage than one of Jons pwm-servo's. > > > > > > This motor supposedly turns 220 rpms no load with 24 volts applied. > > > > > > It has an encoder on the rear which is making a 5.4khz quadrature > > > signal when its running free, out of 4 wires, no index which is fine > > > as I'll put a switch on the BS-1 for a home/index anyway. > > > > > > This motor draws 4 amps at max rated 100 watt input. > > > No clue what the LRA amps is but it does jump pretty good getting > > > started so I'd expect startup in-rush to be at least 10 amps. > > > > > > I'd like to control its position like a common rotary servo axis, so > > > what do we have in our linuxcnc toolbox that looks like a bi-dir pwn > > > controlled twin H bridge to run a 24volt brushed PMDC motor with a > > > 10 amp in-rush as if it were a servo? > > > > > > Thanks all. > > > > > > 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) > > > If we desire respect for the law, we must first make the law > > > respectable. - Louis D. Brandeis > > > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > > > > > > > _______________________________________________ > > > Emc-users mailing list > > > Emc-users@lists.sourceforge.net > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > > 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) > If we desire respect for the law, we must first make the law respectable. > - Louis D. Brandeis > Genes Web page <http://geneslinuxbox.net:6309/gene> > > > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
