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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@Gordon
Well, 7200rpm / 60 = 120 Hz - so yes, that should be fine in terms of speed. Because you're going to be switching in a pattern, you'd have to use JavaScript to do it - and the execution speed will be the thing that slows you down.
I doubt the Espruino pins would provide enough power though (it's only around 20mA @ 3.3v) - not to mention the noise you get from switching inductive loads - so you'd need to use a driver board.