Hi all, i want to use a PIC chip to read in pulses from a vehicles ignition system. My idea was basically to wrap a coil of wire around a HT lead which will then produce some current in it when the spark plugs fire, and then to detect these pulses on the pic chip.
Thing is i have no idea where to connect the coil of wire and how much voltage it will have etc in order for it to work. Will it have to be stepped down or what.
The bikes electronics are 12v so i was thinking of using a 5v voltage regulator for this to power the pic, then where does the coil of wire go, is it from +5v to an input pin on the chip or what?
Any help is appreciated.