Re: Polaroid Sonar Device fried!!!! 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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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

