Here is a video illustrating a difference PWM (Pulse Width Modulation) makes in driving a brushless DC (BLDC) motor, such as the one in DVD drive spindle. If you need smooth rotation, PWM is definitely the way to go! More info at http://elabz.com/bldc-motor-with-arduino-circuit-and-software/
Music Title R. Dark Rock by Kevin MacLeod (incompetech.com) Licensed under Creative Commons "Attribution 3.0" http://creativecommons.org/licenses/by/3.0/"
