Subject:
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Re: Polaroid Sonar Device fried!!!!
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sun, 28 Mar 1999 17:48:16 GMT
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Original-From:
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Will Bain <WILLBAIN@nomorespamCS.UMT.EDU>
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Viewed:
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3212 times
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SCOTT SHERMAN wrote:
> The C3279 chip ("Q1") on my sonar device fried. I checked the expansion
> board and it is assembled correctly. I am not sure why it would fry. I
> added the 0.1uF electrolytic capacitor to C7 position as stated in the
> sonar.html site and suggeted by an email. Does anyone have any idea why
> this would happen?
The most common causes would probably be: (1) Not having a transducer hooked up when the ping is initiated; (2) Having the flat flex cable plugged in backwards (you can't trust the stripe to be on the correct side! Make sure pin 1 goes to ground and pin 9 goes to V+); and (3) Too high a voltage to the sonar module (perhaps it's not being regulated properly). Of course, chips sometimes just die for no apparent reason. Good luck!
-- Will
, ,
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__@_/ \_@__ |/
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~~~~~~~~~ ' ` ~~~~~~~~~~~ ` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Wendy Parson, I don't want to achieve immortality through my work.
Will Bain, I want to achieve it through not dying.
& Tatoosh --Woody Allen
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Message is in Reply To:
 | | Polaroid Sonar Device fried!!!!
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| The C3279 chip ("Q1") on my sonar device fried. I checked the expansion board and it is assembled correctly. I am not sure why it would fry. I added the 0.1uF electrolytic capacitor to C7 position as stated in the sonar.html site and suggeted by an (...) (28 years ago, 28-Mar-99, to lugnet.robotics.handyboard)
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