Ok, not giving too much away at this stage as its a winter project. If one wanted to generate an electrical signal at when a car reaches a certain speed say at 70 and again when dropping the speed at say 40, anyone know how it could be done. Been thinking of mechanical ways to do it and have a few up my sleeve, but was wondering if there are any techy's in here that could do it electronically. Ive heard something about pulse signalling but know nothing about it.
You've probably guessed why I've ask, but is early days yet.