This file type includes high-resolution graphics and schematics when applicable. This design describes how to light a string of LEDs of any color from a 1.5-V cell using just a few inexpensive ...

Chris Wedel is a fan of all things tech and gadgets. Living in rural Kansas with his wife and two young boys makes finding ways to stay online tricky — not to mention making my homestead smarter.

Smart holiday string lights can add some serious flair to your festivities. With millions of color options and some dazzling effects, they offer a lot more versatility than a set of standard LED ...

Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission. John Carlsen has more than a ...

A constant current is better than a constant voltage for driving LEDs. In this proposed circuit, a common constant-voltage regulator is changed into a constant-current source for LEDs. In addition, a ...

We all want our outdoor space — whether it’s an adorable city balcony or a sprawling suburban yard — to feel cozy, warm and inviting, like an extension of our home. Aside from adding some fresh ...

We didn’t love the look of Eufy’s string lights, but their rock-bottom cost makes them a decent choice for occasional lighting needs. The Eufy smart home brand is the latest into the fray with its ...

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