You could use the DC motor + PID exactly the same as using steppers. With the encoders you would always know the exact angle though which the motor had rotated. The advantage would be the lack of any jerks in motion which are inherent with a stepper. Have you considered using the Clearpath units? See https://www.teknic.com/
> -----Original Message----- > From: R C [mailto:cjv...@gmail.com] > Sent: Friday, July 10, 2020 10:05 PM > To: emc-users@lists.sourceforge.net > Subject: Re: [Emc-users] off topic: pwm with a stepper driver/motor > > yep.. true.. but it is also knd of what I do for a living... > > > I think it can be done, to build an equatorial platform, and really > control it's speed/angle over time. > > > On 7/10/20 7:52 PM, Ken Strauss wrote: > > I also waste a lot of time exploring different ways of doing things but > > frequently end up doing it the traditional way. One should never just > > accept > > "how it is done" but for many (most?) things there are good reasons for > > traditional ways. > > > >> -----Original Message----- > >> From: R C [mailto:cjv...@gmail.com] > >> Sent: Friday, July 10, 2020 9:43 PM > >> To: emc-users@lists.sourceforge.net > >> Subject: Re: [Emc-users] off topic: pwm with a stepper driver/motor > >> > >> I don't think anyone did, but I know that's how most do it... > >> > >> But that's just too easy :) I would just like to see if I can do it, > >> killing time > >> > >> > >> On 7/10/20 7:39 PM, Ken Strauss wrote: > >>> I haven't been following this closely but has anyone suggested that you > >>> use a > >>> DC motor with an encoder? With a PID loop and PWM power to the > motor > >> you could > >>> run the motor continuously. DC motors with integrated encoder and > >> planetary > >>> gearbox are readily available for a few dollars. Just a thought. > >>> > >>> > >>> > >>> > >>> _______________________________________________ > >>> 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 > > > > > > > > _______________________________________________ > > 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 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
