Stepper motors

Hi I am only in the very first stages of planning my project.

Is Arduino ONE enough for a project that needs to control 3 stepper motors individually? I have looked at the "Stepper motor example", and I think it should be enough with Arduino ONE.

How big a stepper motor can it run?

How do I calculate the size of the stepper motors I need for my project?

Sorry if these questions are a bit stupid, I'm just getting started. Carsten

Is Arduino ONE enough for a project that needs to control 3 stepper motors individually?

Yes see my project:- http://www.thebox.myzen.co.uk/Hardware/CNC_Conversion.html That uses three.

How big a stepper motor can it run?

The arduino itself can't run a stepping motor you need a motor driver to do that, the arduino controls the driver, this can be as big as you like.

How do I calculate the size of the stepper motors I need for my project?

Work out what torque you need at what speed and buy a motor that delvers that.

Thank you - for the link and the answers :)