Subject:
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Re: Polaroid Sonar problems
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 20 Feb 1999 18:09:41 GMT
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Original-From:
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Will Bain <WILLBAIN@CS.UMTantispam.EDU>
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Viewed:
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1216 times
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Guy wrote:
<snip>
> I followed the directions on the web page, added the capacitor on C7 and
> still, when using the function SONAR_DISPLAY() I get values ranging
> from about 400 to 600, with no apparent consistency. (readings which are
> wrong when converted to distance)
The numbers you're getting may correspond to the length of the blanking
interval, which would suggest that the transducer is still ringing when
blanking ends. You might try increasing the blanking interval so that
you're sure to register an echo instead of a reverberation of the ping.
It's a long shot, but it might help. Best of luck to you!
-- Will
P.S.--Quite a few people have mentioned returning the average of a
series of sonar readings, but I think that when you get your sonar
working properly, you'll find that the median is more useful. It was
for me.
, ,
__@_/ \_@__ |/
| /__, o @_/
)\ ) ( \ (\/\\,
~~~~~~~~~ ' ` ~~~~~~~~~~~ ` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Wendy Parson, The real problem is not whether machines think,
Will Bain, but whether men do.
& Tatoosh --B. F. Skinner
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Message is in Reply To:
 | | Polaroid Sonar problems
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| Hi! I know this has been dealt with before, yet I couldn't find a good answer in the mailing list archive. Maybe someone could give me a hand, I've been having problems with the sonar connected to my HB. I followed the directions on the web page, (...) (26 years ago, 20-Feb-99, to lugnet.robotics.handyboard)
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