elapsed time between two led flash...

[dario]

Ooooo a lot of friends..

Thanks to all!!

[JEC]

At the risk of sounding rude...

This sounds a lot like a homework problem.

And most of the folks on these boards don't do homework for people.

* * *

Google around for optical detector circuits. Check the compiler manual and you'll learn how to connect and program the LCD. Read the datasheet and you'll learn all about timers.

If you can show us what you've tried so far, we can probably guide you in the right direction. But if you're expecting sourcecode + schematics to be magically plopped in your inbox, you've likely come to the wrong place.


JEC