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 02:31:13 GMT
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Original-From:
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Tim McSweeney <TIM@AMS.CO.ihatespamNZ>
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Viewed:
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817 times
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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....
Send Out a number N,
If the sensor thinks there is something close then
if last number received via IR port == N then
it's probably us
Change N
Repeat.
If you change N randomly and sample several times before making a decision
then you can be pretty sure that it's your own reflection you are "seeing"
and not a tower or hostile RCX :)
Cheers
Tim
> If the radar setup is using the light sensor to detect an IR
> spike from the
> RCX's IR port that would indicate proximity to an object then
> a fairly long
> or stong pulse would need to come from the IR tower to
> trigger the "evasive"
> behaviour triggered by spike detection on the light sensor.
>
> But it may be possible....
>
> Rich
> http://rich.cmcsmart.com
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | 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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