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hi,
here is what i use for proximity detection:
http://www.half-cocked.de/modules.php?op=modload&name=Sections&file=index&req=viewarticle&artid=4&page=1
bye
In lugnet.robotics.spybotics, Brian B. Alano writes:
> > André Koopman wrote:
> >
> > 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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fth wrote:
> hi,
> here is what i use for proximity detection:
> http://www.half-cocked.de/modules.php?op=modload&name=Sections&file=index&req=viewarticle&artid=4&page=1
Thanks! In hindsight, it should have occurred to me to subtract out the ambient
light. I guess I just didn't know how. :)
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