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coil pulse output?

Posted: Sun Nov 22, 2009 1:30 pm
by reliant_turbo
im having a hard time finding info about something.

Is there an output (logic level or whatnot) that goes high or low upon every ignition pulse when using the MS2 code/setup? even when driving individual coils and such? i need something like that when driving some external circuitry.

Thanks

Brian

Re: coil pulse output?

Posted: Sun Nov 22, 2009 6:56 pm
by Bernard Fife
Brian,

That's typically referred to as a 'tach output'.

MicroSquirt has a tach output on pin 35, this comes from the injector LED processor pin PM3 driving an NPN transistor (PN2222A) with a 12V pull-up. MicroSquirt and MS-II use the same code, so you could probably adapt this in the proto area on a V3 main board.

Lance.