Remote Vehicle Starter Help

[Art]

Just got the tachometer working yesterday without any interrupt!

I decided to check the tach signal port in the main loop
just to roughly check the engine is not already running before engaging the starter motor.

I found that a single pulse is counted several times.
Adjusted the check to count only low to high transitions,
and voila! I have my pulse count!!

This would probably be too low res to measure time between pulses, and program adjustments would interfere
with timing so I count the number of pulses over a second for a display that is updated every second.
Not bad for free though