Subject:
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Re: IR Proximity Detection via RCX IR Port
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 17 Jan 1999 16:37:39 GMT
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Original-From:
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Chris Stanley <cstanley@usit.net^StopSpam^>
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Viewed:
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997 times
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i'm not sure, but i don't think this would work. when i was developing
mine, i once tried to run it without the ir pulses to see if it would work
off the led (constant instead of pulsing) and it proceeded to immediately
run into everything it had been avoiding previously. so unless there is
some difference in performance between a constant and pulsing light source,
i don't think the led puts out enough light to work (except perhaps in a
dark room).
--
Chris Stanley
cstanley@usit.net
Issac Merkle wrote:
> Hey, I've got a stupid question.
>
> I've been thinking about the IR Proximity Detection idea, and I wonder:
> Why is using the RCX's IR port and a light sensor better than using the
> light sensor alone?
>
> I realize its good to be able to pulse the IR light source and watch for
> the pulses, but couldn't you pulse the LED on the light sensor (by
> switching between IN_SENSOR and IN_RAW mode) and watch for that? Then
> your IR Port would be free to communicate fulltime.
>
> Or am I missing something obvious?
>
> I can see the advantage of using IR if you put an IR shield over the
> light sensor, preventing it from seeing anything but IR light, in that
> you would eliminate a fair amount of false positives, I suppose...
>
> Regards,
> Issac.
>
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message is in Reply To:
 | | RE: IR Proximity Detection via RCX IR Port
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| Hey, I've got a stupid question. I've been thinking about the IR Proximity Detection idea, and I wonder: Why is using the RCX's IR port and a light sensor better than using the light sensor alone? I realize its good to be able to pulse the IR light (...) (25 years ago, 15-Jan-99, to lugnet.robotics)
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