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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Fri, 5 Feb 1999 18:57:05 GMT
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Original-From:
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William Bain <willbain@cs.{nospam}umt.edu>
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Viewed:
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1080 times
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On Fri, 5 Feb 1999, 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.
It's possible that the flat flex cable could make electrical contact
either way, since the socket has "teeth" in it that could penetrate the
insulation on the one side of the cable.
And *don't* trust that the dotted edge is the correct one; I ordered the
pair of sonar kits, and it came with one cable correctly marked and the
other cable incorrectly marked.
Just make sure that pin 1 as marked on the sonar module board ends up
connected to the corresponding pin on the expansion board. If you're in
any doubt, check the circuits and verify that V+ goes to V+, GND goes to
GND, etc. I hope this helps.
--Will
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Message has 1 Reply:
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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