CHAPTER 8Persistence-of-Vision Display
ATOP THE EVIL GENIUS’ LAIR, there is a sign that is holographic in appearance and displays the slowly rotating message “Hello.” The sign uses a vertical line of multicolor LEDs that rotates rapidly, producing a persistence-of-vision effect (see Figure 8-1). The main purpose of such a display is to help the Evil Genius find his way back to the lair, exhausted after a hard day achieving world domination.
This project has two parts, an Arduino microcontroller-based LED unit that sits on top of the second part of the project: the motor and motor control unit. This controls the speed of the motor that spins the ...
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