Petzl Swift RL 2 review: a (head) beacon of light
Lightweight, comfortable, and brilliant: the Petzl Swift RL 2 is the ultimate head torch for high-octane outdoor adventures
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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 colors. Also, these little rascals are daisy-chained together, which means we can drive the whole stick...