Re: [CAD_CAM_EDM_DRO] Rotary to linear translation - an interesting idea.

Bertho Boman wrote:

> Wait a minute. Not so fast. There might be something here to think about.
>
>
>
> Maybe i can shed some light on this .

The guys name is Scott Acorn he developed the dro and sold the schematic and parts list in HSM for awhile .
he is a lurker on this list but has posted a few times early on . i believe in regards to his homade sinker edm.
the system for setting up the rotary encoders ,developed by this dude, and described by Alan really does work and solves the pi
problem.
it is rumored that he is currently learning how to program a pic 16f84 in order to come out with a simpler dro design , he
plains to multiplex the led numbers , this will cut down on the number of connections in the ckt.

cheers:
Scott Acorn - tool maker - maker of electro/mech. wacky things - and all-round good guy.
Plympton Ma.

>
> beer@... wrote:
>
> >
> > > Here's the interesting part, that I haven't been able to get my head
> > > around.
> > > The guy claims that by pressing the pulley farther and farther into
> > > the shim stock, causing greater and greater deflections ( adjusting
> > > tension as required ), the pulley diameter is effectively changed - a
> > > given amount of linear travel will cause more or less rotation.
>
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