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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Sat, 9 Oct 1999 15:58:30 GMT
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Viewed:
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760 times
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In lugnet.robotics, lego-robotics@crynwr.com (Chris Osborn) writes:
<...snip>
> The next thing I did was I mounted a mirror on the end of the motor
> axle instead of the laser. I actually just broke an AOL CD to
> get the mirror. AOL CDs make really good mirrors, and I was able
> to file it down to about the size of a 2x2 plate.
This is the best use I've heard of yet for an AOL CD!
> One of the things I did though was to setup a method so I could
> vary the angle of the mirror on the end of the motor *while* the
> motor was spinning. I wanted to be able to aim the laser straight
> towards the motor, and have it bounce off and make a cone. But I
> needed to be able to adjust the diameter of the cone on the fly.
> The whole idea was that somehow I would get this thing suspended
> over the top of a Christmas tree, and use the laser to mark where
> it needed to be trimmed. This has yet to happen however.
>
> My parents grow Christmas trees in their backyard, but almost never
> go out and shape them. And of course I thought a perfectly shaped
> tree would be cool.
And if you use one of those nifty, high-powered, rock-vaporizing lasers, you
won't even need to bring pruning shears!
> One of the neat things I found though was that if I bounced the
> laser from an angle, I could get cool eliptical cones. Probably
> even better for Christmas trees, you'd have flattish trees that
> you could smash right up against the wall or window.
Actually, a friend of mine likes to glue mirrors onto the cones of cheap
speakers, and then he aims a laser at the mirror and plays his stereo through
it. If you do it right, you get a pretty cool visual display that goes along
with the music.
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Message has 1 Reply:
 | | Re: !!! Laser attachments for Mindstorms !!!
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| (...) Yah, did this in college long ago, before laser pens were common. We used the "big" lasers. :-) We also glued a small mirror onto a piece of aluminum foil wrapped around the end of an open tube, and placed it outside in the quad. Then we (...) (25 years ago, 9-Oct-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: !!! Laser attachments for Mindstorms !!!
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| One of the early things I did with my laser pen was rubberband one of the 5 stud long "helicopter rotor" plates to the side of it. I never got it balanced *perfectly*, but it was close. I then stuck the axle from the older 9 volt technic motor (...) (25 years ago, 9-Oct-99, to lugnet.robotics)
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