Adafruit NeoPixel Ring - RGB LED w/ Integrated Drivers - 12 Pixels books KSRobot 紅外遙控器 x1

KSRobot 紅外遙控器 x1

In addition

light-dependent resistors (LDR)

or a computer unit only

Adafruit NeoPixel Ring - RGB LED w/ Integrated Drivers - 12 Pixels books KSRobot 紅外遙控器 x1Round and round and round they go! Ultra bright smart LED NeoPixels arranged in a circle 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