With a circular LED you can achieve many interesting creation on it, here we will post some creation about it next.
Circular LED yellow line – > Arduino UNO pin 9
Circular LED white line – > Arduino UNO pin 10
Circular LED red line – > Arduino UNO 5V
Circular LED black line – > Arduino UNO GND
Download : CircularLED， to download the CircularLED test code.
Unzip the test code and put it to the Arduino install directory libraries, open the Arduino IDE , as follows.
Unload and you will see the rotation effect of LED.
Upload the code, we can see one of the LED light rotate in clockwise, the diagram as below: