Stan HarrisonSomething was suspiciously wrong.The bathroom fan timer switch was making that funny buzzing noise again. It had been buzzing on and off for several weeks.Then finally, it happened.

A knob is a knob, a switch is a switch, and that’s that, right? And what about those knobs that have detents, set in stone at the time of manufacturing? Oh, and those knobs that let you jog l… ...