On Mon, 24 Mar 2008, Kenneth Lerman wrote: > Date: Mon, 24 Mar 2008 20:31:32 -0400 > From: Kenneth Lerman <[EMAIL PROTECTED]> > Reply-To: "Enhanced Machine Controller (EMC)" > <[email protected]> > To: "Enhanced Machine Controller (EMC)" <[email protected]> > Subject: Re: [Emc-users] Jogger wheel + switches > > If you put a little DC bias into the stepper coils, you might be able to > vary the "detent" action to suit the user. > > Ken
Good idea, but if you did, you would probably have to 1. Make the bias a current source (resistor) 2. add ac couplng to the detector Note that the detent would be 50 DPR (detents per revolution) > > ----- Original Message ----- > From: "Ormund Williams" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Monday, March 24, 2008 8:29 PM > Subject: Re: [Emc-users] Jogger wheel + switches > > >> On Mon, 2008-03-24 at 17:20 -0700, Peter C. Wallace wrote: >>> We used 10K input resistor to protect comparator and 510K positive >>> feedback >>> resistor on our little adapter board. This gives a sensitivity of ~100 >>> mV. >>> Might be possible to improve this a little with experimentation... >>> >> Thanks for the tip. I was going to setup a test to see what the output >> voltage range was. >> >> __ >> Ormund >> >> >> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by: Microsoft >> Defy all challenges. Microsoft(R) Visual Studio 2008. >> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ >> _______________________________________________ >> Emc-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/emc-users >> > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > Peter Wallace Mesa Electronics (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
