In a message dated 2/11/2002 4:37:04 AM AUS Eastern Daylight Time,
adampic@UBASICS.COM writes:


> IIRC, the fuel injector looks just like a solenoid to the car computer.
> You should be able to see a nice, clean 12v pulse (with perhaps voltage
> spikes when tunred off) on the wire.  I'd use the optocoupler circuit
> anyway, though, for a number of reasons.
>
> Are you going to publish the circuit bits for others to use?  I've been
> interested in making a fuel usage guage for years...
>
> -Adam

i can publish whatever i end up using, there is a link at
http://www.bubblesoftonline.com/projects/coil.html for interfacing the pic to
the points of a car to measure rpm. If this RC network (with extra bits) can
work with an injector pulse then that is what i will use. If not i will look
into something else, like an optocoupler.


D

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body