Re: Sherline Spindle Pulse disk for threading

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Geert De Pecker
<geert.de.pecker@...> wrote:

>
> Bill,
>
> I'm currently playing with the same idea. Not yet done, but you

can find

> my intentions here: http://users.skynet.be/gedp/FILES/index.html

encoder.

>
> Optics will come from an old mouse (ir led and phototransistor).
>
> Just need to turn some kind of holder. Easy alu piece.
>
> Disc will be cut from a cd protector (like you find on blank cd

spindles

> to protect the cd's below. Looks like regular cd, but without

coating).

>
> For the marks, I think to print it on transparent en glue this to

the

> disc. Maybe will have to darken the stripes with a marker or so.
>
> Hope this helps
>
> Geert

Hi Geert,

looks like you have a LOT of lines. have you calculated the
feedback rate and spinle RPM?

I think we did this on the ELS group and software would have a hard
time keeping up to more than about 6 postions per revolution.

Dave