reading the crank

[Ric Rainbolt]

>By the way this is the way that the Yamaha FZR 600 reads the crank,  3 short
>pulses and 1 long.  And this is a very dynamic engine, so dont flame on only
>having 4 triggers per rev please.
>
Wow.  The system I'm working on has 144 teeth.  Guess I'll be *REALLY*
accurate. :-)

By the way, the starter ring on the flywheel is an excellent place to pick
this up, no cogs,
gears or wheels to add, just mill a hole for a reluctive sensor and voila!
Of course, you may run into a problem if your CPU of choice can't keep up
(i.e. 8051, etc).