Shuji Nakamura already transformed the world once. His invention of blue light-emitting diodes (LEDs) changed everything ...

When I first started testing Vizio’s 65-inch Mini LED Quantum TV, I thought the big story was that Vizio was back and that it ...

A slim yet powerful flashlight and laser built for any situation.

If you want to get around Monaco, a map — digital or otherwise — is probably the best way to navigate. But if you just want ...

The MitoGLOW at-home LED mask promises brighter, firmer-looking skin, but it also encouraged me to make 10 intentional ...

This continuous LED is perfect for photographers and videographers who need a compact, constant light with an extra-long ...

When it comes to performance, there's a world of difference between the Raspberry Pi and Arduino. The former, after all, is technically a fully functional computer that can run games, word processors, ...

You might think that CD players and DVD players have had their run, but as it turns out, they are absolute goldmines for DIY projects. Pop one open and you'll find stepper motors, laser assemblies, ...

Photoelectric sensors detect objects and surface changes using variations in optical properties. Each sensor includes a light emitter and a receiver, with most relying on infrared light. In optical ...

Our Smart Home Using Arduino Uno R4 WiFi project is designed for home safety and convenience, integrating temperature, humidity, light, and gas monitoring. Using sensors like DHT11/DHT22, LDR, and ...

I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller and a piece ...