332 Stim board - was '749 questions

[Bruce Plecan]

Can I suggest just using your 555 to fire a LED thru a 1K resistor, and feed
that (the 1.8v) to a GM ign module, and wire that to the ecm.
   The Pic isn't needed for a DIS type system unless your looking to make a
DIS 749.
I'm not sure of what your trying to really accomplice here.
Bruce




> The stim board has 5 pots, a PIC, and a 555.  One pot controls the 555
period to
> generate RPM,  which goes to the PIC.  The PIC then creates cam and crank
signals to
> feed to the '332.  The other pots are used for MAP,  IAT, TPS, and CTS.
All these
> signals exit the board through a DB37 compatible with the 332's input
connector.

> I'm using this to stimulate the '749,  but I'm not sure what the '749 is
expecting
> for inputs from the ignition module.  I'll re-program the PIC to generate
the
> correct signals (including VSS) for the '749 when I figure out what it
needs.
> Regards,
> Bill


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