Subject:
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Re: ...was - my robot works
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Newsgroups:
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lugnet.org.ca.rtltoronto
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Date:
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Thu, 11 Oct 2007 12:20:55 GMT
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Viewed:
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2426 times
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On 10-Oct-07, at 9:58 PM, Wayne Young wrote:
> In lugnet.org.ca.rtltoronto, Chris Magno wrote:
> > -Can the robot start ANYWHERE along the length of the rope height, or
> > will all robots HAVE to start at the height of 20" from the bottom of
> > the floor?
>
> I need to amend the official rules: the ropes end 12" from the
> floor. I used
> that instead of 20" because the ropes will no longer be hung from a
> ceiling. Is
> this a deal breaker for anyone?
>
> Feel free to fasten your robot anywhere along the rope's length.
> This should
> allow those who built their robots to the 20" spec to still work.
I thought the idea was we'd try the robots at different lengths of
rope to see how they perform.
I think it's important that competing robots use the same length of
rope. Otherwise I'm tying my robot as close to the top as I can.
Shorter the rope the easier it is to get it swinging.
> Since the top bar (where the ropes are anchored) is within reach
> now, it might
> need to be said that having the robot touch or use the top bar to
> gain momentum
> is not consistent with the spirit of the game.
I agree. You should not be allowed to touch the top bar.
>
> >
> > -If the new goal is not the "wall" then how will we determine "angle"
> > and highest?
>
> Mark 1 eyeball, general concensus, I guess. How do folks feel about
> using
> velocity (at the bottom of the arc) to judge the winner? In other
> words, the
> best swinger is the fastest moving one at the end of X minutes?
I don't know how you plan to judge speed. Other then the fastest at
the bottom will be the one to swing up the highest.
It really shouldn't be that hard to judge which one is swinging
higher. There are lots of methods I can think of to do this. Bring
a long stick and hold it beside the arc of the swing. Put a mark on
it the higher the robot goes. Have a mark for each robot.
One suggestion I had was the first robot the break the plane of the
sawhorse legs wins. That's very easy to judge.
> Got another question for the group. How do people feel about
> alllowing knots to
> fasten the robot to the ropes? I think it should be allowed since
> the contest is
> more about getting the robot to swing and less about how to build a
> fastener out
> of Lego.
I agree knotting the rope should be acceptable. In fact we should
use the knot to define the height of the rope for each run. Actually
you don't want dangling rope because it will act as a damper for the
swing. How about we place a knot at the bottom of the rope and retie
the rope at the top to get different heights.
It might be better to tie the rope to eyelets screwed into the cross
beam rather then tying the rope around the beam. We want a very
clean point of rotation. But I'm not entirely sure this will be better.
Derek
Derek
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Message has 1 Reply:
 | | Re: ...was - my robot works
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| (...) If it were me, this is how I'd want to do it. Assuming there are "legs" holding the bar, simply put a rope from one leg to another, about half way down. The goal would be to make the robot's rope touch the marker rope. Steve (17 years ago, 11-Oct-07, to lugnet.org.ca.rtltoronto)
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Message is in Reply To:
| | Re: ...was - my robot works
|
| (...) I need to amend the official rules: the ropes end 12" from the floor. I used that instead of 20" because the ropes will no longer be hung from a ceiling. Is this a deal breaker for anyone? Feel free to fasten your robot anywhere along the (...) (17 years ago, 10-Oct-07, to lugnet.org.ca.rtltoronto)
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