What could be better than smart RGB LEDs? Smart RGB+White LEDs! These NeoPixel rings feature 4 LEDs (red, green, blue, and white) for amazing lighting effects. This is the 12 - LED RGBW NeoPixel Ring in warm white. There are many other NeoPixel rings in our store. 12 ultra - bright smart LED NeoPixels are arranged in a circle with a 1.45' (37mm) outer diameter. The rings are chainable, allowing you to connect one to another. You only need one microcontroller pin to control multiple rings. Each LED is addressable with an in - built driver chip. With ~18mA constant current drive, the color remains consistent even with voltage variations, and no external choke resistors are needed, making the design sleek. Power it with 5VDC and you're good to go. The NeoPixel is split, with one half being the familiar RGB and the other a white LED with yellow phosphor. When lit, it's incredibly bright. You can control it with 8 - bit PWM per channel for 32 - bit color. Great for adding colorful and white dots to your project. NeoPixel LEDs use an 800 KHz protocol. Their PWM rate is ~400 Hz, which works well but may show pixelation when the LED is moving. DotStars have a 20 KHz PWM rate for smoother blending. We recommend DotStars if possible. These are 5050 - sized LEDs with an embedded microcontroller. You can precisely set the brightness and color of each R/G/B/W with 8 - bit PWM. They're controlled by shift - registers and only need 1 digital output pin. The PWM is built - in, so you can stop sending data after setting the color. We have a tutorial on wiring, power usage, and example code. Note that you need a NeoPixel library with RGBW support, which isn't always available. Our Adafruit NeoPixel library supports RGBW. Our detailed NeoPixel Uberguide has all you need for NeoPixels of any shape and size, including ready - to - use library and example code for various Arduino models. It comes as a single ring with 12 individually addressable RGB LEDs, already assembled and tested.
Using this NeoPixel ring is easy. First, power it with 5VDC. You can connect multiple rings together by linking the output pin of one to the input pin of another. Then, use only one microcontroller pin to control all the connected rings. You can set the brightness and color of each LED using an 8 - bit PWM for each R/G/B/W channel. Remember, you'll need a NeoPixel library with RGBW support. Our Adafruit NeoPixel library works great, but if you use another one, you might need to do some adjustments. When it comes to maintenance, keep it in a dry place. Avoid exposing it to high - humidity or extreme - temperature environments. Since the LEDs are very bright, don't look directly at them for a long time to protect your eyes. Also, be careful when handling the rings to prevent any physical damage.
