Subject:
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Re: light sensor question
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Thu, 31 Jul 2003 08:37:27 GMT
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Viewed:
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6196 times
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In lugnet.robotics.rcx, Jona Jeffords wrote:
> In lugnet.robotics.rcx, Vidhyanath Rao wrote:
> >
> > I suspect that the spectral composition of the lights are quite
> > different. As to what the difference is, I have no clue. But it should
> > be available somewhere.
> >
> > Along the same lines, the technical answer to the original question is
> > the response curve of the light sensor. This should also be available.
> > Does anyone know? [Does the light sensor use photo-transistors from a
> > fixed manufacturer, or does it change over time?]
>
> A friend of mine suggests that the poor response of the sensor to the LED is
> because the light from the LED is a single color. Where as the light from the
> incandescent bulb is white light which apparently contains many if not all of
> the colors.
>
> Jona
I've done a lot of readings with the light sensor and analysed them. If you want
to have a look you can go to http://privatewww.essex.ac.uk/~mkogut/Report.doc .
If you look in the appendix of that document you'll find information on the
light sensor (and many other things...)
Magdalena
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Message is in Reply To:
 | | Re: light sensor question
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| (...) A friend of mine suggests that the poor response of the sensor to the LED is because the light from the LED is a single color. Where as the light from the incandescent bulb is white light which apparently contains many if not all of the (...) (23 years ago, 29-Jul-03, to lugnet.robotics.rcx)
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