Subject:
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Re: Proximity detection?
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Newsgroups:
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lugnet.robotics.spybotics
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Date:
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Mon, 24 Feb 2003 19:59:57 GMT
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Viewed:
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6430 times
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> André Koopman wrote:
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> As far as I know. Spybot reacts on the IR transmissions from the controller
> or an another Spybot. But perhaps you can let the Spybot transmit RCX
> messages and receive the reflections from a static object via the light
> sensor on the back of the Spybot..
Just to report my initial findings using the rear LED and light sensor for
proximity detection:
Overall results are unsatisfactory. Even under the best circumstances, it could
not reliably see the LED reflected against my blue leather sofa. I might try
aligning the beam better or diffusing it.
Ambient light was also a major problem, even with the threshold high as 50
percent. In fact, it usually detected windows and lamps better then LED
reflections. I might try examining a rate of change instead of an absolute light
level.
On IR proximity and static objects, I now infer from the Spybotics software that
there is a target (designated "black outline") that will detect an object in the
anywhere zone. Can anyone confirm this.
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Proximity detection?
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| Thanks for the reply, André. I've read that the IR emitters are "low-power". Does this mean the red LED on Spybot would have a longer range than the IR emitters if used in proximity detection? Since the LED is recessed, I guess is would have a (...) (21 years ago, 20-Feb-03, to lugnet.robotics.spybotics)
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