On Friday 19 June 2020 23:03:36 Ken Strauss wrote: > > -----Original Message----- > > From: Jon Elson [mailto:[email protected]] > > Sent: Friday, June 19, 2020 10:43 PM > > To: Enhanced Machine Controller (EMC) > > Subject: Re: [Emc-users] Universal spindle speed control for $7 > > > > On 06/19/2020 07:03 PM, andy pugh wrote: > > > On Sat, 20 Jun 2020 at 00:38, Ken Strauss <[email protected]> wrote: > > >> Good point regarding the need for an index. Are there cheap > > >> encoders > > > > capable > > > > >> of higher RPM? > > > > > > It will cost you less than $10 to find what happens to those > > > encoders at 10k rpm. > > > > > > (My guess would be that they just stop seeing the edges) > > > > Oh, if you need 10 K RPM, then it is best to use a gear > > tooth sensor and a modest number of > > teeth to sense. Spindle encoders do not really need a high > > count/rev to give good threading > > results. > > > > Jon > > Obviously I'm not contemplating threading at 10K RPM! However, I'd > like to leave the encoder installed at all times which is why I'm > concerning about it surviving at high RPM. Suggestion for a cheap gear > tooth sensor? > ATS-667,hall effect, about $7 copy, need three, but you have nylon gears they can't see.
> > > > _______________________________________________ > Emc-users mailing list > [email protected] > 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
