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 20:56:50 GMT
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Original-From:
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Simen Svale Skogsrud <SIMEN@antispamMOP.NO>
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Viewed:
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999 times
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That was my original project when I stumbled upon the IR detection method.
I found that it was hard to compare the results from the Lightsensor in the
different modes, and that the LED is probably too weak as a lightsource. I
tried it for some hours, but at least I couldnt make it work.
Simen
> > 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
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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