POV Shield description:
The POV Shield is modular system for displaying persistence of vision (POV) or simply to show some cool LED patterns. It uses three TLC5940.
Each can control 16 LEDs using pulse width modulation (PWM) with a grayscale resolution of 4095. However there are three of them so it has red green and blue (RGB).
POV Shield specification:
POV Shield pinout:
For more detail: POV Shield