This is the 16 - LED NeoPixel Ring from Adafruit. It's a small, chainable board with an outer diameter of 1.75 inches (44.5mm) and comes with 5050 WS2812 RGB LEDs. The WS2812 LEDs are individually addressable as the driver chip is inside each LED. With a ~18mA constant current drive, the color remains very consistent even when the voltage changes, and it runs on 5V. Each ring has a single data line with a timing - specific protocol, needing a real - time microcontroller with an 8MHz or faster processor like an AVR, Arduino, PIC, mbed, etc. There are solder pads on the back for wire connection or breadboard pins and two mounting holes to secure the board on various surfaces. Documents include NeoPixel Überguide, NeoPixel Library, and Product Video.
Using this NeoPixel Ring is easy. First, connect it to a real - time microcontroller with an 8MHz or faster processor. You can use the solder pads on the back to connect wires or insert breadboard pins. There are also two mounting holes if you want to secure it to a surface. When powering it, make sure to use 5V. The ring will show consistent colors thanks to the constant current drive. Just follow the NeoPixel Überguide and use the NeoPixel Library for more advanced control. Keep it away from water and high - temperature environments. If it gets dirty, you can gently wipe it with a dry cloth. That's all you need to know to enjoy your NeoPixel Ring.
