8 RGB Rainbow LED Ring is a kind of LED ring with 8 ultra-bright RGB LED beads placed on a circle panel. This circle has a 1.25" (32mm) outer diameter and 0.62" (16mm) inner diameter. The ring is chainable. On the circle panel, you can see one output pin of a bead connected to an input pin of another bead. With only one built-in microcontroller pin, you can use an outer device to control this LED ring.
