Subject:
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Re: Ultrasonic proximity sensor
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 20 Nov 2003 22:53:16 GMT
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Original-From:
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michael shiloh <michael@makingthings#Spamless#.com>
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Viewed:
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891 times
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On Thu, 20 Nov 2003, Jim Choate wrote:
> - Every dog (and a lot of musicians) in the area is going to go crazy when
> that thing is turned on
>
> It'd be interesting to find out where they got their transducers and what
> they were intended for before they got dumped here...
back up alarms for dogcatchers and photographers...
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Message is in Reply To:
 | | Re: Ultrasonic proximity sensor
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| (...) The frequency at which air is best matched is about 40kHz, several things with this: - low resolution because of the low frequency - going to take more power to get a given range of detection than using a commercial grade unit (works at 40kHz) (...) (21 years ago, 20-Nov-03, to lugnet.robotics)
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