But rather than using alternating currents through large inductors, [Tim] put 40 neodymium magnets with alternating polarity around the circumference of a large MDF disk. When driven by a drill ...
I recently learned of a fun hack photographers can perform on the Sony DCS-F828 digital camera of the 2002 vintage. I happen to have a sort-of-working F828 in my photo closet, so I thought I'd try it ...