Hi Rob..
How's the testing of the new software going? I tried the opto sensor devices I have here with the new timer board with exactly the same results I was getting before..so it's not the hall sensors or the magnets. The trigger source is not really the problem here but how the PIC sees it and responds to it. Something in the PIC software seems to be causing it. Without knowing what the software is doing in the PIC is making it hard to figure it out. I built another timer board with a newly programmed chip and it does the same thing. After it fires for the 2nd or 3rd time, it will go into some sort of an oscillation where it continually fires for a few seconds by itself for some reason.

Although the first change that was made does allow it to fire on the first revolution, the rest hasn't changed. Hopefully the programmer can find this and make the proper changes. I know it's difficult making changes and testing them while adding other features. Two other people in my area have just completed the timer with the same results. I have no idea how to write software or I'd have tried it. I appreciate what the programmer has given us so far and I'm sure he will figure this out, given enough time.[sm=47_47.gif]

John