Subject:
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Re: Handyboard Expansion Sonar Issues
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sun, 7 Feb 1999 00:26:30 GMT
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Original-From:
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messiah@unm.edu=spamless=
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Viewed:
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1200 times
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The quickest check is to go from V+ of the diode string and see if
continuity to pin 1 of TL851 and pin 5 of SN28784 are less than 5 ohms.
Similarly check from ground of your power connector to pin 3 of TL851
and pin 16 of SN28784 are less than 5 ohms.
Best wishes,
Nick Taylor wrote:
>
> jdunn@unm.edu wrote:
> > <snip>
> > There is a very high probability that you plugged the foil cable in
> > backwards. Doing so, even for a moment, will destroy the IC chips.
>
> Please explain. Now I'm worried about damaging my sonar board. Since
> the foil cable has conductors on only one side, I didn't think that it
> was possible to plug it in "backwards" and still make an electrical
> connection.
>
> My understanding of the hookup is as follows:
> On the HB Expansion Board pin 1 (gnd) of the Polaroid connector is
> toward the top of the board. On the Polaroid Ranging Module pin 1
> is toward the left. If the foil cable is connected so that the
> dotted edge of the cable is nearest the pin 1 end of each connector,
> I fail to see how there is any danger of damaging the sonar board.
>
> Thanks for your help.
> - - -Nick - - -
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Message is in Reply To:
 | | Re: Handyboard Expansion Sonar Issues
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| (...) Please explain. Now I'm worried about damaging my sonar board. Since the foil cable has conductors on only one side, I didn't think that it was possible to plug it in "backwards" and still make an electrical connection. My understanding of the (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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