AbdulMoizFarooq:
Robin2:
Given that you can't read from 2 pins at the same time then what is the maximum amount of time between readings that would be acceptable in order to get useful data?I am not sure, what is the minimum time I can get??
The minimum sample rate required is a pretty essential part of specifying any discrete time sampling system. If you're just looking for a fundamental imbalance then twice the rotational rate of your spindle is the lower bound per the Nyquist Theorem. There may be higher order vibrations in a particular system that need be taken into account.