Subject:
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Re: simple but functional radar
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 13 Jan 1999 20:08:42 GMT
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Original-From:
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Paul Speed <pspeed@augustschell*stopspammers*.com>
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Viewed:
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988 times
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Peter Hesketh wrote:
>
> In article <002301be3e9c$ca7b2180$2b00c8c0@tim.ams.co.nz>, Tim McSweeney
> <tim@ams.co.nz> writes
> > With this IR Radar stuff is the reflected signal that is picked up by the
> > sensor also strong enough to be picked up by the RCX? if so....
>
> It would be, if the RCX wasn't transmitting at the same time. Remember
> the echo you get from a tower back to the PC even with no RCX present.
> I would guess that there is a very strong optical crosstalk in the IR
> unit which would always be there, and so the RCX always receives, and
> which its firmware presumably throws away.
Based on my experiments, this is exactly what's happening.
In hindsight it really can't be any other way, but I was really looking
forward to working out something where the IR port could do the whole
proximity detection without getting the light sensor involved. I tried
and failed. :( Oh, well.
-Paul (pspeed@augustschell.com)
> --
> Regards - Peter Hesketh, Mynyddbach, Mon.
> Forty reasons why a dog is better than a woman: number 17
> "A dog's disposition stays the same all month long."
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message is in Reply To:
 | | Re: simple but functional radar
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| In article <002301be3e9c$ca7b21...ms.co.nz>, Tim McSweeney <tim@ams.co.nz> writes (...) It would be, if the RCX wasn't transmitting at the same time. Remember the echo you get from a tower back to the PC even with no RCX present. I would guess that (...) (25 years ago, 13-Jan-99, to lugnet.robotics)
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