Subject:
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Re: Lght Sensor & Three colors?
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Wed, 7 Feb 2001 08:58:50 GMT
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Viewed:
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1541 times
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In lugnet.robotics.rcx, Matthew Fisher writes:
> Can the light sensor accurately distinguish between THREE colors? All the
> designs I've seen work with two; e.g. a brick sorter, green & red.
>
> And if so, what colors are recommended: Red, Green, Blue? Black, White,
> Grey?
>
> Thanks.
My card reader 2 reliably reads cards built with yellow, grey and black
plates (http://philohome.free.fr/cardreader2/cardreader.htm).
One problem in brick sorters is that slight modifications of brick positions
can cause more variation in reflected light than color. Take care too of
specular reflexion that can make a black brick appear white... I used
diffusing tape on the sensor to avoid this.
Philo
http://philohome.free.fr
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Message is in Reply To:
 | | Lght Sensor & Three colors?
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| Can the light sensor accurately distinguish between THREE colors? All the designs I've seen work with two; e.g. a brick sorter, green & red. And if so, what colors are recommended: Red, Green, Blue? Black, White, Grey? Thanks. (24 years ago, 16-Jan-01, to lugnet.robotics.rcx)
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