Re: gEDA-user: Universal Turin^H^H^H^H^Hmilling machine

[Charles Lepple <clepple@gmail.com>]

On Sun, 7 Nov 2004 15:14:29 +0000, Karel Kulhavy <clock@twibright.com> wrote:
> And a Gray-code readout strip (graycode is simple - take a normal binary code
> and derivate it from left), use it in feedback loop and you get unprecedented
> performance - or not? :)

I'm going to hazard a guess that if you build an incremental encoder
yourself (as the above description reads), you are probably going to
sacrifice more accuracy than you would lose (due to backlash) by using
a low-cost X-Y table and gearing down some brush motors. (Unless, of
course, you can find excellent-quality encoder read heads from some
surplus catalog.)

-- 
- Charles Lepple