Subject:
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Re: Help!! Polaroid problem!!!
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 28 Apr 1998 00:54:14 GMT
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Original-From:
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Chuck McManis <cmcmanis@freegate/StopSpam/.com>
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Reply-To:
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cmcmanis@freegate[NoMoreSpam].com
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Viewed:
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1773 times
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Note that sonar in air is susceptible to the same environmental
issues as sonar anywhere. In particular it is susceptible to
changes in temperature and changes in air pressure. Both of which
create a boundary layer that reflects some of the energy. For a
really cool experiment blow cold air in front (across) the sonar
transducer. You should get an echo back from the 'cold front'
you've produced.
--Chuck
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Message is in Reply To:
 | | Re: Help!! Polaroid problem!!!
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| Hey, I just wanted to thank everybody for there help with this, it did turn out to be the pull up resistor problem, I feel like a moron. We used the handyboardy sonar interfacing schematic when we wired it up and failed to realize that we aren't (...) (27 years ago, 23-Apr-98, to lugnet.robotics.handyboard)
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