Subject:
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Re: Navigation using landmarks (Was: Re: lasers and RCX)
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 30 Jun 2002 18:31:30 GMT
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Original-From:
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Rob Limbaugh <rlimbaugh@NOSPAMgreenfieldgroup.com>
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Viewed:
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686 times
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I'm certain that the optics need to be insanely close to the surface they
are monitoring, causing a clearance problem.
If such a device was hacked, would placing it in the center of a synchro or
Killough platform prove useless in a spin?
Rob
>
> > Does anyone know how they work and where to get the chips?
>
> Well, where you get the chips is you pull apart a mouse these mice are • pretty
> cheap these days. The software and control logic is all inside the • mouse - they
> don't have any special drivers in the PC. Hence, the protocol is the • usual mouse
> protocol that's well documented all over the web.
>
> How they work - well, I can only presume that they are watching an image
> of the desktop under the mouse and doing some kind of signal processing
> to derive the speed and direction of motion. This is confirmed by the
> fact that these things don't work on very smooth, plain-coloured surfaces,
> and expecially on very reflective surfaces (where the mouse tries to track
> an image of it's own underside!).
>
> Dunno how accurate they are - in their intended application, they can
> mis-estimate the mouse speed considerably and still work well.
>
> ----------------------------- Steve Baker -------------------------------
> Mail : <sjbaker1@airmail.net> WorkMail: <sjbaker@link.com>
> URLs : http://www.sjbaker.org
> http://plib.sf.net http://tuxaqfh.sf.net http://tuxkart.sf.net
> http://prettypoly.sf.net http://freeglut.sf.net
> http://toobular.sf.net http://lodestone.sf.net
>
>
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Message is in Reply To:
 | | Re: Navigation using landmarks (Was: Re: lasers and RCX)
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| (...) <blush> (...) Well, where you get the chips is you pull apart a mouse these mice are pretty cheap these days. The software and control logic is all inside the mouse - they don't have any special drivers in the PC. Hence, the protocol is the (...) (22 years ago, 29-Jun-02, to lugnet.robotics)
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