This is a tiny motor you
can extract from Mac floppy drives made by
Mitsubishi. It's not as efficient as the
about as small as a "sub-micro"
servo (and much
less troublesome). I'd be a big fan
of these if they were easier to
Note that Omron also
made some very similar motors; I have yet
to test one of them...
To the right I've got a
picture of one (sitting on a mirror, for a
bit better view), courtesy of
You'll note that this differs in a few
details from my drawing; I suspect a few
details in the plastic changed from year
to year to keep track with changes in the
floppy drive design.