Subject:
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Re: Sonar and the handyboard
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 4 Feb 2000 07:30:17 GMT
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Original-From:
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William Bain <montanawill@yahoo.com{StopSpam}>
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Viewed:
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1628 times
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My guess is that the Polaroid unit will only be able to drive
transducers with electrical characteristics very similar to the
Polaroid transducer.
The transducer functions mainly as a capacitor, and in between
pings, it is kept at a couple hundred volts DC bias (I guess
for effectively listening for an echo).
If you can get your hands on a capacitance meter, you might
test your depth finder transducer and see how close it comes to
the Polaroid specs.
Keep in mind that you should never trigger a ping on the
Polaroid unit without a transducer hooked up to it; apparently
that'll blow the circuit permanently. If you try a different
transducer with it, wear safety goggles and have a fire
extinguisher handy ;-]
Let us know the results of any smoke tests you conduct. Best of
luck!
-- Will
--- Derrick Rapp <rappr@union.edu> wrote:
> I need to attach an underwater sonar ranger to the handyboard
> but I cannot
> figure out how. Does anyone have any experience with this?
> One question that
> I have is if sonar transducers other than the polaroid 7000
> unit can be
> attached to Polaroids driver IC? If this is the case, then
> can I attach the
> polaroid circuit to the handyboard and a standard boat
> transducer to the
> polaroid circuit?
>
> Any help is desperately needed. Thanks
=====
Any sufficiently advanced technology
is indistinguishable from magic.
-- Arthur C. Clark
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