if you read data and at t=t0=5 you got 50 and at t=t1=10 you got 0, so it took t1-t0=10-5=5s to move from 50 to 0 ..
so if 50 means 0 degrees and 0 -90 degrees, you rotated at 3tr/mn

if you want to find when it goed to 0, you have to test it as fast as possible, to increase precision.
If I anderstand what you w

On 4/26/06, Demetris Zavorotnichenko <fgcity4652@cytanet.com.cy> wrote:
how do i calculate how long it took to go from 50 to 0?

Jérôme Multrier
TinyCoach, un projet KaliBee