How to find velocity using a potentiometer

[Sully1071]

I'm new at labview and am unsure how to design a VI that will that will convert the analogue voltage from my linear potentiometer into a velocity and possibly acceleration. I know the maths side of things and i have to differentiate to find velocity. I am however not sure how to do this in Labview. 

I would appreciate any help as it is part of a college project.

Thanks

[smercurio_fc]

duplicate post

[NIquist]

If you just want to know how fast a potentiometer shaft is turning then you need a DAQ card with analog inputs and the proper DAQmx code to read the signals.  This kind of application is LabVIEWs forte. 

[smercurio_fc]

We should keep the discussion in one place, as there has been a lot of info floating around in the other thread.