What should you pick when you want to build a touchless lamp or light switch? A sensor of course! This is a design of a touchless lamp with a common and cheap reflective optical sensor. With a ...

There are a variety of smart switches on the market, and we’ve broken down the best of the best. Whether you're looking for a simple setup or something a little more complex that adds loads of ...

With just three transistors, one relay, and some resistors and capacitors, a single light switch can provide sophisticated control of high-power and low-power lamps. With just three transistors, one ...