NeoPixel Ring - 24 x WS2812 5050 RGB LED with Integrated Drivers

24 ultra bright smart LED NeoPixels are arranged in a circle with 66mm 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 with 5VDC.

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, Arduino, Raspberry Pico, Microbit. It cannot be used with a Linux-based microcomputer like the Raspberry Pi or interpreted microcontroller.

Adafruit's wonderfully-written Neopixel library for Arduino supports these pixels! As it requires hand-tuned assembly it is only for AVR cores but others may have ported this chip driver code so please google around. An 8MHz or faster processor is required.

Comes as a single ring with 24 individually addressable RGB LEDs assembled and tested.