DIY Ambilight with WS2812B LEDs

Overview The goal of this project is to build a dynamic backlight, also known as an ‘ambilight’, for my PC monitor. An ambilight changes colors based on the content onscreen, extending your monitor to the wall behind it. By reducing the contrast between the monitor and the background it can also help with eye strain. There are some commercial versions of this product, but I wanted to see if I could make one myself with WS2812B addressable LEDs (also known as NeoPixels) and an Arduino. This was a fun project and I’m really happy with the end result. If you’d…

FastLED vs Adafruit_NeoPixel for RGBW LEDs

Multicolor LED strips generally come in two flavors – solid color and addressable.  Solid color strips, as the name implies, have all of their LEDs display the same color.  Addressable strips on the other hand allow you to control the color value of every individual LED in the strip.  The most popular individually-addressable LEDs on the market at the moment are Adafruit Industries’ NeoPixels, based on the WS2182 chipset.  They come in a variety of physical packages including strips, rings, and matrices.