DIY LED Ring Clock Project Component 24 X WS2812 WS2812B 5050 RGB LED Ring Lamp Light 24 Bits For Arduino WS2812B Programmable Light Ring If you want to use it with raspberry pi, please confirm it has 5V line, if not, then you need level shifter to convert the voltage from 3., 3V to 5V Product Description 24 super bright smart LED Pixels are rounded in a circle with 2.6" (66mm) outer diameter. The rings are 'cascadable' - connect the output pin of one to the input pin of another [How many colors can it emit?]It can emit 256X256X256=16777216 colors Ring for Arduino Raspberry Pi ESP32 (Pack of 5pcs). DIYmall 24 Bits RGB LED Ring 24 X WS2812B WS2812 5050 Lamp Light with Integrated Drivers. 1 / 5. $49.99 [Input Voltage]DC4-7V, we often use USB cable to power it. 24 X WS2812 WS2812B 5050 RGB LED Ring Lamp [Application]LED Ring Clock, 3D Printed LED Fire Horns, Sound Reactive Peace Pendant