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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Thu, 28 Oct 1999 01:11:11 GMT
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Original-From:
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alex wetmore <alex@phred.*nomorespam*org>
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Viewed:
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517 times
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On Thu, 28 Oct 1999, Matthew Miller wrote:
> Kay Neuenhofen <lego-robotics@crynwr.com> wrote:
> > Yes, plus two touch sensors to implement bumpers. Otherwise, you won't
> > know when you hit an obstacle. That leads to sensor multiplexing, as
>
> Why, if you're keeping track of motion? I mean, if you suddenly stop, it's
> probably safe to assume you've hit something. :)
In fact the rotation sensors work much better for this, because
they will easily tell you when you stopped in any direction. It
is much more complex to build a bumper which surrounds the RCX and
can detect hits from most any direction.
I did come close to building such a bumper at one point
(http://phred.org/~alex/lego/wanderer.html was the first version
of it). My goal was to have a bumper which would detect a
collision in any direction that the robot would travel. In a room
full of static objects it could run until the batteries died down,
but it couldn't deal with a moving obstacle hitting it from the
side.
alex
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Message has 1 Reply:
 | | Re: !!! Laser attachments for Mindstorms !!!
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| (...) The synchro-drive model on my page has a 360 degree bumper consisting of those rubber bumperpieces used in a Technic Hovercraft some years back. I think they are presently available on Res-Q set # 6473 (at least they look the same in the LEGO (...) (25 years ago, 28-Oct-99, to lugnet.robotics)
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