Subject:
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RE: Compass/directional sensor
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 14 Dec 1998 01:08:58 GMT
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Original-From:
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Tim McSweeney <TIM@saynotospamAMS.CO.NZ>
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Viewed:
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1366 times
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You could mount a printed disk on a comapss needle and use some sort of
encoding via the light sensor to determine your direction.
By changing the shade from white to black you'd probably be able to get a
decent angle reading. The only tricky bit is what happens at the
black-white meeting, If the light sensor detects this as a mid-gray you'd be
out be 180deg.
Tim
> -----Original Message-----
> From: news@lugnet.com [mailto:news@lugnet.com]On Behalf Of Don Forth
> Sent: Monday, December 14, 1998 1:51 PM
> To: lego-robotics@crynwr.com
> Subject: Re: Compass/directional sensor
>
>
> I remember seeing that someone had used a compass and
> the light sensor to be able to detect weather they were moving
> north or south. But I don't think they could tell between the two.
>
> I might be mistaken but I think there was a picture in the members
> section of the mindstorms sight.
>
> --
> =====================================
> Don Forth ( Klaatu )
> email: dforth@caro.net
> Home Page: http://www.caro.net/~donfor
> =====================================
> Janet and Carl McIver wrote in message
> <01ff01be26d5$8d22a4e0$1bfe2399@end-user>...
> > -----Original Message-----
> > From: Mark Schroeder & Jenise Uehara <msju@pobox.com>
> > To: 'lego-robotics@crynwr.com' <lego-robotics@crynwr.com>
> > Date: Saturday, December 12, 1998 11:34 AM
> > Subject: Compass/directional sensor
> >
> >
> > Has any seen or made one of these? I figure this would make
> a mapping
> robot
> > more versatile than just relying on just rotational information.
> >
> > Spent a good bit of time looking at these for awhile, so
> here is my
> list
> > of links:
> > http://idt.net/~aosi/
> > http://www.precisionnavigation.com/index.html
> > http://www.xbow.com/
> > http://dinsmoregroup.com/dico/ check out the 1490, might be • simplest for
> > the RIS.
> >
> >
> >
> >
>
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Message has 2 Replies:
 | | Re: Compass/directional sensor
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| In article <002101be26fe$548a96...ms.co.nz>, Tim McSweeney <tim@ams.co.nz> writes (...) If you could find a code which only changes by one bit at any transition you would be OK. I know that the Gray Scale does this for linear measurement, but is (...) (26 years ago, 14-Dec-98, to lugnet.robotics)
| | | RE: Compass/directional sensor
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| I like this idea quite a bit. Instead of going starting white and progressing all 360 degrees to black, though, how about having pure white represent 0 degrees and progressing through gray to black at 180 degrees and then back to white? You would (...) (26 years ago, 14-Dec-98, to lugnet.robotics)
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Message is in Reply To:
| | Re: Compass/directional sensor
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| I remember seeing that someone had used a compass and the light sensor to be able to detect weather they were moving north or south. But I don't think they could tell between the two. I might be mistaken but I think there was a picture in the (...) (26 years ago, 14-Dec-98, to lugnet.robotics)
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