Hi Matt,

well, some time ago, Melaine told me to do the pulse counting using two pics.
One for the counting task and another one to do the "hard" work (Math, LCD output etc)
I tried to figure out how to do that using two Pics but I could no find a good solution. In my tests the system did not work very well.
How are you doing that with two pics ?

Talking about the mileage storage, I´m just writing to the eeprom if the user press the "Finish" button. In other words , my system just writes the data if the user want.
I´m building my odometer system just for fun, it is not a commercial product.

I was reading an article about odometers and they say that some commercial versions just write the values when we have another new 1/10 th of a kilometer or Mile.

If we consider a high speed as 180 Km /h we will have a new 1/10 th of a kilometer (100 meters) on every 2 seconds. And if you storage this new value using this method, I think you will not loose data.

Waht dou you think ?

regards

Sérgio