Subject:
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Re: Homebrew sensors?
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 13 Nov 1998 21:58:31 GMT
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Viewed:
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2370 times
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There is a single channel sound sensor on my web page:
http://ourworld.compuserve.com/homepages/Michael_Gasperi/lego.htm
It was really designed for picking up loud noises like claps. What you want
would require two mics and a circuit that would take the difference between
the sound levels. Better yet it should have a very narrow bandpass filter so
that only sound a particular frequency would be heard. The output would look
something like Light values: 50 for equal sounds at both mics, 0 for mostly
left mic, and 100 for mostly right mic. The same kind of scheme could be done
for temperature to make a heat seeking robot.
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Message has 1 Reply:
 | | Re: Homebrew sensors?
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| (...) I was thinking of something that sensed amplitude, not frequency. (Like the light sensor, which sees brightness, not color.) Of course, whatever you want for yourself is best. :) I know the logic of taking two sensors and differentiating to (...) (26 years ago, 14-Nov-98, to lugnet.robotics)
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Message is in Reply To:
| | Homebrew sensors?
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| I've been brainstorming for a while about what could be done with a kludge. I'm more into the whoosh-bang side of engineering than the beep-zap, so I don't know if it would work... A few years ago, Estes (the model rocket people) made a "rocket (...) (26 years ago, 13-Nov-98, to lugnet.robotics)
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