As the first step toward my traction control device, I want to build a
circuit that will cut out cylinders with the push of a button.

I want to use a pic that will count and pass along the pulses from the
distributor points - to the ignition box, and determine which pulses to
intercept and not pass along to cut cylinders.

My distributor uses an armature and reluctor for triggering the ignition
box. The wave form goes positive, then cuts  straight down negative. I
assume the ignition box looks for the negative edge.

I need a circuit so that the pic can see the signal from the reluctor. What
would be a good place to start with that.

Then I need a circuit so the pic can trigger the ignition box. I can use
the points input on the box for that, so all I need there is a good 12v
square wave. What would be a good starting point for that type of circuit.

Or perhaps, could the pic 'shunt' the signal from the reluctor? Would that
be easier?

Thanks

John

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