Subject:
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Re: Sensor monitoring
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 23 Jan 1999 20:17:07 GMT
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Viewed:
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1516 times
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Mark Dollar wrote in message ...
> What about using homebrew light sensors made from CdS photoresistors? Seems
> like it would be possible to multiplex them since they don't require power.
There is no passive way to multiplex analog values into an analog value.
With extra electronics you could threshold each CdS sensors level to a
binary signal and then convert them to back to analog. For an example of
the last bit of electronics see my rotation sensor circuit at:
http://ourworld.compuserve.com/homepages/Michael_Gasperi/hbangle.htm
It converts two switches to match the 4 analog values the LEGO rotation
sensor uses. If you replaced the switches with CdS sensors it would
probably work the way you want.
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Message is in Reply To:
 | | Re: Sensor monitoring
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| (...) that (...) What about using homebrew light sensors made from CdS photoresistors? Seems like it would be possible to multiplex them since they don't require power. (25 years ago, 23-Jan-99, to lugnet.robotics)
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