Description The NeoPixel-Ring is based on WS2812 RGB LED with an integrated control circuit hidden underneath. 16 ultra bright smart LED NeoPixels are arranged in a circle with 1.75″ (44.5mm) outer diameter. The rings are ‘chainable’ – connect the output pin of one to the input pin of another. Use only one microcontroller pin to control as many as you can chain together! Each LED is addressable as the driver chip is inside the LED. Each one has ~18mA constant current drive so the color will be very consistent even if the voltage varies, and no external choke resistors are required making the design slim. Power the whole thing with 5VDC (4-7V works) and you’re ready to rock. There is a single data line with a very timing-specific protocol. Since the protocol is very sensitive to timing, it requires a real-time microconroller such as an AVR, Arduino, PIC, mbed, etc. It cannot be used with a Linux-based microcomputer or interpreted microcontroller such as the netduino or Basic Stamp. Applications: Living room, Interior lighting, Lighting Control Panels, Color LED Lighting for Object Recognition in Robotics, etc. Technical Specifications No of LEDs: 16 Waterproof: No Basic Colors: Red, Green Blue (24-Bit RGB Resolution) LED Chip Model: SMD5050 Power Source: DC LED type: SMD Model Number: WS2812b chip LED Voltage: 4V-7V DC Max Power Consumption (W): 0.24W x 16 = 3.84W Dimensions: 68mm /-1mm outer diameter. 54mm /-1mm inner diameter. 3.1mm thick. Weight: 5.9g Pinouts 5V – This should be a regulated supply voltage between 4V and about 7V. More than that could harm the LED, less than 5V will either reduce brightness, or it just won’t turn on. GND – The common, ground, 0V reference supply voltage. DI – Data from a microcontroller (or another WS2812 pixel) comes into this pin. DO – Data is shifted out of this pin, to be connected to the input of another pixel or left floating if it is the last link in the chain. Documents and Download WS2812 Datasheet WS2812 Arduino Library by Sparkfun NeoPixel Arduino Library by Adafruit Package Includes 1x NeoPixel Ring – WS2812B x16 RGB LED Ring – 68mm (External Diameter)
