This bright and colourful ring is a lovely addition to your project!
16 individually addressable 5050 WS2812B RGB LEDs are placed on a circular board to form a nice ring. WS2812B LED is a quite popular type of LED and you can find libraries for it quite easily. Being addressable, you can program each individual LED ON or OFF with any of the Red, Green or Blue (RGB) colour variation or even mixing colours between them. At the back, there are solder pads for you to make connection. This board is powered by 5V DC and can be controlled by a microcontroller such as Arduino boards. Only one digital output pin is required from the microcontroller to control this LED ring.
You can chain multiple rings together so that only one power source and one control pin from a microcontroller is needed. To do that, just connect the output pin (OUT) of one ring to input pin (IN) of the other ring. You can chain as many rings as you like. Each LED needs around 18mA constant current, so make sure your power supply can support this.
Technical details:
LED type: WS2812 5050 RGB LED with integated driver
