Parallel Port Interface

[nacelp]

Have you read up on the efi332 list?.
That's all I can say about this
Grumpy


> Hi I am new to the list (joined this weekend).
> my name is Chris Wilkinson, and I am very interested
> in all types of fuel injection projects.
>
> My particular project is to build a PC based fuel
> injection system, to be developed around one of my
> race bike engines.  These engines are 250cc 2-stroke
> engnies which produce 45-50 H.P. @ 8500 RPM. This
> project is not meant for any particular purpose except
> that of my further education.
>
> my engine only needs one injector (1 cylinder)
> and I would like to run it from a parallel port.
> My limited knowledge of this subject gives me the
> inclination to develop a C or C++ coded piece of
> software which can send a Puls Width Modulation signal
> out the first data pin on a parallel port. I would
> amplify this (using a switching transistor) to 12v to
> directly control my injector. I also need to devise a
> way (probably using an Analog/Digital Conv.) to read
> my MAP sensor and Temp sensor. I can use my existing
> digital ignition pulse generator to read RPM.
> Using these sensors and my stock carb I hope to create
> a  4 Dimensional  table (MAP*Temp*RPM*TPS) for lookup
> table type injection. then replace the carb with a
> Throttle body and injection manifold.
>
> few... with all that said I am looking for any
> suggestions on how to amplify the injector signal from
> the parallel port, and how to convert the sensor
> analog data (MAP TEMP TPS) to usable digital data.
>
> Also I am not much of a programmer so Is there anyone
> who can tell me how to code (C or assembler in a DOS
> environment) to modulate my injector signal. I also
> thought of using a sound card or USB to modulate the
> signal.
>
> If any of you can help me or steer me straight I would
> be very greatfull.
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