Quote Originally Posted by z3t4 View Post
Les Jones posted this, first on the Shumatech site, then on MEW.

It works very nicely as a tachometer. I used an Allegro gear tooth sensor and just told it to count 65 teeth per rev.

HTH,

John
Thank you for the link, This looks like a very nice circuit. I was rather trying to avoid digging out the pic programmer and all the other gumph that goes with it. But unless i can get an off the shelf solution, that seems to be the way i will have to go, as both yourself and Irving have indicated.

Ive just moved home and that stuff formed the least important box when moving, which I suspect means it is in the most awkward place in the garage under god knows what.... HELPPPPPPPPP...