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From: gcouger@olesun.okstate.edu (Gordon Couger)
Subject: Re: Cheap color sensor
Message-ID: <1993Jan9.002400.2169@osuunx.ucc.okstate.edu>
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Date: Sat, 9 Jan 1993 00:24:00 GMT
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In article <1993Jan8.194916.8558@black.clarku.edu> kbasye@black.clarku.edu (Ken Basye) writes:
>
>I've been wondering lately about how one might build a very simple and
>cheap color sensor.  I have in mind something that would be fairly
>reliable in providing 3 or perhaps even 4 bits of discrimination and
>which would be fairly reliable given good input, e.g., having a
>well-lit piece of colored construction paper put in front.
>
We are using some three color light emiting diodes as sensors. They appear to
work well not as sensitive as photo diodes but they will work at reasonable 
light levels. 

I think we got them form LEDTRONICS some place in Calif.
Good luck
Gordon

Gordon Couger
AB5Dg   Agriculture Engineering Oklahoma State University
gcouger@olesun.agen.okstate.edu 405-744-6514 day 744-2794 evenings   
