This NeoPixel ring from Adafruit consists of 24 individually addressable RGB LEDs that can all be controlled with a single digital output of a microcontroller and chained together with other rings and SK6812/WS281x-based LEDs to make larger, more complex displays. This ring has a 2.6″ (66 mm) outer diameter and 2.05″ (52.5 mm) inner diameter.

We also carry two other types of NeoPixel rings: a 16-LED ring with a 1.75″ (44.5 mm) outer diameter and 15-LED quarter-circles that can be combined to make a 60-LED ring with a 6.2″ (158 mm) outer diameter.

The ring can be controlled by many microcontrollers, but our A-Star 32U4 Micro works particularly well for applications where space is an issue since it fits neatly inside the ring. The picture on the right shows an A-Star 32U4 Micro controlling three different sizes of NeoPixel rings. See the Protocol section near the bottom of this page for some things to consider when selecting an appropriate microcontroller.