Subject:
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Re: rtlToronto8 and light sensors
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Newsgroups:
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lugnet.org.ca.rtltoronto
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Date:
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Tue, 29 May 2001 16:40:07 GMT
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Viewed:
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413 times
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> First, as a rough count, how many folks are coming to rtlToronto8 (June 9th,
> Saturday) with a robot for competition? And how many are coming to watch?
I should be able to bring a robot, but mine isn't coming together as nicely
as I would like. I have a really slick three wheel driving base built, but
the gathering/sorting mechanism has been tough to build. My original idea
resulted in about 5 prototypes until I realized that it just wasn't going to
work. So I am settling on something entirely different (and simpler hopefully).
>
> Then, how many people are using single RCX vs multi RCX? Single unit vs
> multiple units? Single light sensor vs multiple light sensors?
I would really like to go with a single RCX, but that all depends On what
navigation technique I use, and the sensors required. I defenitely need to
use a rotation sensor for steering, and one or two light sensors for
sorting... You see, I figure if you have a light sensor facing down just
high enough to allow blocks to pass underneath, you can detect the dividing
line, and differentiate the block colours easily enough. My issue is that my
sorting mechanism is a fair distance away from where the light sensor would
be, so I don't want to rely on just timing to sort the block once they get
there. So probably 2 or 3 light sensors (I will have to borrow the third
from a friend).
>
> Anyone using a single light sensor configuration for rtlToronto8? Victor
> and I spent Sunday working on a prototype robot and had a sensor angled at
> the floor that could also see a block. We got reasonably separate readings
> for blocks (both white and black) and floor, but the issue is that once
> you've got a block, you can't read floor anymore to tell if you're in enemy
> territory or back home to discard or keep.
I don't think this is a problem at all. The block doesn't stay under the
light sensor for very long (or does it?). In my case it is just a matter of
programming to differentiate between two thin alternating lines and one
thick section of colour for a block. Not that I have done this yet...
Rob
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Message has 1 Reply:
 | | Re: rtlToronto8 and light sensors
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| (...) Hrm, maybe I should think about a movement algorithm more complex than "drive around randomly" :) (...) Sounds like some people are picking up blocks, and some people are just pushing around blocks instead. VJR (URL) (23 years ago, 29-May-01, to lugnet.org.ca.rtltoronto)
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Message is in Reply To:
| | rtlToronto8 and light sensors
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| Hey folks, First, as a rough count, how many folks are coming to rtlToronto8 (June 9th, Saturday) with a robot for competition? And how many are coming to watch? Then, how many people are using single RCX vs multi RCX? Single unit vs multiple units? (...) (23 years ago, 29-May-01, to lugnet.org.ca.rtltoronto)
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