Reactive Lighting News Today

Lightweight, comfortable, and brilliant: the Petzl Swift RL 2 is the ultimate head torch for high-octane outdoor adventures

Whether you’re in the backcountry or simply under the kitchen sink, there’s a light for everything. Check out our list of the best headlamps we have tested.

A typical Arduino Uno prototyping scenario. First of all, we see the Arduino Uno in the lower-left-hand corner of the image. A little to the right, we see a stick of eight WS2812B tricolor LEDs (commonly known as “NeoPixels” because that’s what the folks at Adafruit call them). In addition to red, green, and blue sub-LEDs, these little scamps also contain three 8-bit pulse-width modulators (PWMs), thereby allowing each NeoPixel to display 2^8 * 2^8 * 2^8 = 2^24 = 16,777,216 different col...