On Fri, 28 Mar 2008 14:10:33 -0400 (EDT), piclist@ian.org said:

> 
> Does anyone have a suggestion on what the easiest way to spin this thing 
> back up would be?  It's a standard, brusless and sensorless three-phase 
> motor that all new hard drives use.  I'm open to building it if it's not 
> too involved, or buying an off the shelf driver if a cheap one exists.

Since you don't need the motor to start(spin it by hand to start) you
can do almost anything and it doesn't need to be three phase. I've done
it with a CD4049 as an oscillator, and two power transistors running out
of phase of each other driving two of the legs of the motor, and tie the
other motor leg to supply voltage. Give it a spin and away it goes.

Cheerful regards,

Bob

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