I'm interested in mimicking the functionality of the Arqball Spin, at $60 it isn't cheap so I'd like to make the most out of my Mindstorms parts.
I'd like to use NXT-G to program a motor to rotate 350° in 20 seconds. NXT-G can only controll the power of the motor and duration (Unlimited, Degrees, Rotations & Seconds). The power of the motor can be set from 0 to 100 seemingly arbitrary values:
I don't mind using 3rd party software to program the motor, provided it's easy to use.