It had to come to this. For his entry into this year’s Hackaday Prize, [Sean Hodgins] created a persistence of vision fidget spinner. This isn’t just any PoV fidget spinner — this is the ultimate in ...

Fidget-spinner tricks used in simple demonstrations show motion and balance in entertaining ways.

There’s no accounting for what makes something go viral. Talking dogs, a natural. The flip-cup craze, random but understandable. “That hot new ADHD toy” — slightly out of left field. But that is where ...