Ugh ... The intention here is to pick up the noise induced on the line by=
 the=20
spark-plug wires.  Unless you absolutely cannot get the signal from the=20
engine for some significant reason, I hate this idea.  Design it properly=
, I=20
say.

Cheers,
-Neil.


On Tuesday 15 July 2003 18:23, Mike Hord scribbled:
> I don't have any links, but I do have a suggestion.  Someone suggested
> a few weeks ago that monitoring the cigarette lighter voltage on a car
> can be used to extrapolate the speed of the engine.  I don't know what
> the relationship is; my suggestion, stick an o-scope on it and find out=
!

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu