The Well-Linuxed Car

David A. Bandel david
Mon May 17 11:56:18 PDT 2004


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On Mon, 1 Dec 2003 15:15:30 +0100
Roger Oberholtzer <roger at opq.se> wrote:

[snip]

> 
> Even something as 'innocent' as an RS-232 port takes on new problems
> in a vehicle if the equipment at both ends are not sharing the same
> ground sense.

Boy have you hit a biggie on the head.  And since a vehicle doesn't have
a true ground in the full sense of the term, you nailed it with "ground
sense".  All equipment _must_ see the same ground from their point of
view or you'll get all kinds of strange behavior and odd burnouts.  I
see this problem on boats all the time. Aircraft share the same problem.

Ciao,

David A. Bandel
- -- 
Focus on the dream, not the competition.
		Nemesis Racing Team motto
GPG key autoresponder:  mailto:david_key at pananix.com
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