Subject:
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how to see the flame
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 13 May 1997 03:05:00 GMT
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Original-From:
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Fred G Martin <FREDM@MEDIA.MIT.saynotospamEDU>
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Viewed:
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1418 times
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some people use fancy sensor devices, but i have found that a simple
CdS photocell or a phototransistor, with some kind of shielding tube
to block ambient light, works quite well for seeing the candle flame.
check out the pix -- lots of robots have a variety of shields, with
photocells or phototransistors at the back.
-fred
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