My name is Bill, and I'm a dumpster diver.
[Hi, bill!]

I take apart old disk drives with my kids, mostly for the magnets.  (Cool
magnets in the head positioner.)  Seems a shame to waste the spindle motors,
though...  Now, a spindle motor is a brushless multiphase (usually 3phase)
motor, not unlike a DC fan, right?  Except that fan motors have a simple
little one-or-two transistor circuit to drive them, while the disk motor
probably has at least one dedicated IC, a bunch of power transistors, and
probably the direct involvement of a microprocessor, so that the speed can
be aequately regulated...  If I don't CARE about speed accuracy, is there
a simple circuit I can use to drive a spindle motor?

Thanks
Bill W