CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Simple DRO new idea

on 2001-09-04 10:54:28 UTC
Hi Shabbir,

That's not a ring magnet! More like a "slug" or round "bar" magnet. If
you're looking for a ring magnet, take apart (it's ok this time) a cheap
24 step (or more) stepper motor.

Alan KM6VV


"M. SHABBIR" wrote:
>
> hi
> u can find ring magnet in back of audio speaker.
>
> shabbir
>
> At 02:26 PM 9/2/01 -0600, you wrote:
> >Scott
> >I am working on a very simple dro using a special purpose Hall effect sensor
> >and a simple up down counter connected to a 8 digit led. It would work as
> >follows
> >a linear magnet strip or a ring magnet with alternating north and south
> >magnet passes in
> >front of the Hall effect sensor. This generates a pulse train to the counter
> >circuit.
> >The sensor as has a direction output that is updated first before the pulse
> >so no lost steps.
> >By using a timing belt and gearing the rotary motion of the ball screw or
> >lead screw can be
> >multiplied or divided based on the number of pulses of the ring magnet to
> >equal an accurate count.
> >I will be sharing what I find with the group as soon as I finish a
> >proto-type. I am currently looking for a ring magnet if anyone may know
> >where to find any or have some let me know.
> >Derek B.
> >
> >

Discussion Thread

Scott Riddle 2001-09-02 08:44:49 UTC Simple DRO Doug Harrison 2001-09-02 09:05:03 UTC Re: [CAD_CAM_EDM_DRO] Simple DRO Art Eckstein 2001-09-02 11:46:57 UTC Re: [CAD_CAM_EDM_DRO] Simple DRO wanliker@a... 2001-09-02 12:17:14 UTC Re: [CAD_CAM_EDM_DRO] Simple DRO HighTech 2001-09-02 13:20:49 UTC RE: [CAD_CAM_EDM_DRO] Simple DRO new idea Art Eckstein 2001-09-02 13:40:05 UTC Re: [CAD_CAM_EDM_DRO] Simple DRO M. SHABBIR 2001-09-03 11:38:05 UTC RE: [CAD_CAM_EDM_DRO] Simple DRO new idea cncdxf@a... 2001-09-03 12:01:38 UTC Re: Simple DRO new idea Jon Elson 2001-09-03 15:42:19 UTC Re: [CAD_CAM_EDM_DRO] Simple DRO new idea Alan Marconett KM6VV 2001-09-04 10:54:28 UTC Re: [CAD_CAM_EDM_DRO] Simple DRO new idea M. SHABBIR 2001-09-04 19:36:28 UTC Re: [CAD_CAM_EDM_DRO] Simple DRO new idea Mark Taft 2001-09-05 00:55:16 UTC RE: [CAD_CAM_EDM_DRO] Simple DRO new idea dlantz@a... 2001-09-05 04:56:44 UTC RE: [CAD_CAM_EDM_DRO] Simple DRO new idea HighTech 2001-09-05 09:30:53 UTC RE: [CAD_CAM_EDM_DRO] Simple DRO new idea update Jon Elson 2001-09-05 10:41:35 UTC Re: [CAD_CAM_EDM_DRO] Simple DRO new idea M. SHABBIR 2001-09-06 20:13:31 UTC RE: [CAD_CAM_EDM_DRO] Simple DRO new idea