Worldsemi WS2812 RGB LEDs

The Worldsemi WS2812 Integrated Light Source — or NeoPixel in Adafruit parlance — is the latest advance in the quest for a simple, scalable and affordable full-color LED. RGB LEDs are integrated alongside a driver chip into a tiny surface-mount package piloted through a single-wire control protocol.

They can be used individually, chained into longer strings or assembled into still more interesting form-factors; some product example can be found at Adafruit dedicated page.

Technical Details (for single WS2812 RGB LED)

  • Power Supply Voltage (Vdd): from 4.5 V to 5.5 V
  • Input Voltage (Vi): from -0.5V to Vdd+0.5 V
  • Operation Temperature: from -25 °C to 80 °C
  • Data Transmission Rate: 400 Kbps (duty ratio 50%)

LED Characteristic Parameter

Emitting Color Wavelenght (nm) Current (mA) Voltage (V)
Red 620-630 20 1.8-2.2
Green 515-530 20 3.0-3.2
Blue 465-475 20 3.2-3.4

Here below, the Zerynth driver for the Worldsemi WS2812 led strips and some examples to better understand how to use them.