[Dillon] wrote in to tell us about his latest project, an automatic light switch for a the hallway closet in his house. Although this project could probably be done very simply, [Dillon ...

The comparison connected zoning to how homeowners are used to having a light switch in every room of their house to save energy. That same homeowner would never dream of having one light switch in the ...

Even fancy headlights are mostly limited in operation to low beams, high beams, and maybe the ability to automatically switch ... lights described here. Existing automatic high-beam headlight ...