Subject:
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Re: !!! Laser attachments for Mindstorms !!!
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 15 Nov 1999 20:10:53 GMT
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Viewed:
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2359 times
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Andy Gombos wrote:
>
> How far away can the RCX be before the return cannnot be detected?
> Andy
I don't know. I am working indoors, and detection is not a problem
across my living room, about 5 meters. Now that you ask, I'll probably
try it outside and find the answer. That's an advantage of using a
laser - the beam disperses very little with distance.
> Peter Pletcher wrote:
>
> > I've found that shooting a laser pointer at a bicycle reflector gives a
> > good enough return (to a light sensor right next to the laser source) to
> > be detected. You can use this for navigation, as the RCX can turn
> > around and find strategically mounted reflectors.
> >
> > Sorry, Josh, but I'll stick with my $8 laser pointer. If your brick
> > allows the beam to be turned on and off with, say, a motor output that's
> > pretty cool, though.
> >
> > Nick Goetz wrote:
> > >
> > > Forgive my ignorance with respect to robotics and the like but what would
> > > you do with a laser? Is it used for guiding the robot or can the RCX detect
> > > when the beam is broken? I don't assume it is used to zap dirty dishes from
> > > the dinner table. <g>
> > >
> > > -Nick
> > >
> > > Josh Yeager wrote in message ...
> > > > Hi all,
> > > > I am selling laser modules for Mindstorms. The modules are
> > > > two 2x6 lego bricks one on top of the other with a plate on the bottom.
> > > > It has a wire with a lego power connector on the end attached to one
> > > > end, and the laser sticks out about 1mm from the other end. The wire
> > > > attaches to an output port of the RCX. The modules are available in
> > > > blue or black, but if you would like another color, I may be able to get
> > > > it for you with a slight delay. The price is $35, which includes shipping.
> > > > To order, email me and tell me which color you would like. I need at
> > > > least three more orders, or I will have to raise the price.
> > > >
> > > > Josh Yeager
> >
> > --
> > // Peter Pletcher peterpl@pacbell.net
> > //
> > // A little nonsense now and then is relished by the wisest men.
> > //
> > // - Roald Dahl (from Willy Wonka and the Chocolate Factory)
--
// Peter Pletcher peterpl@pacbell.net
//
// A little nonsense now and then is relished by the wisest men.
//
// - Roald Dahl (from Willy Wonka and the Chocolate Factory)
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