Pabloduino:
Thank you, I made the tests 6 times each distance (0.5, 1, 1.5, 2, 2.5, 3 and 3.5) and I have the values, now I want to show them in a LCD Display, do you suggest something to put in my code?
Decide on the LCD your going to use, get hold of one, and then try the examples in the particular LCDs library first, to make sure you have the LCD connected and working correctly.
And so that we know, you need to tell us the values you got from your 6 tests.