Re: Re: Cheap Encoders

> From: "Dan Mauch" <dmauch@...>
>
> Yes it has been done before. Steve Stallings had a good idea using a wire
> set up like a radio dial connected to a encoder. The mechanical part worked
> fine but there were problems finds a pc lpt card that would work well. The
> linear encoders are much simpler and more positve.

I think this should be Steve Lindsay, see:

http://www.angelfire.com/biz3/handengraving/dro.html

I want to build this to see how well it works, especially whether the wire
will slip on the pulley when wet and oily. This, and the US Digital linear
strip, seem the only alternatives to commercial glass or capacitive scales
(Shooting Star's rack and pinion setup perhaps being a third).

Matt

P.S. I've met Steve Stallings at some meetings of the Chesapeake Area
Metalworking Society:

http://www.cams-club.org

He is a real nice guy and is the fellow responsible for the "Drop Box" at:

http://www.metalworking.com