WHAT YOU WILL NEED
-solid core wire or ribbon cable
-9v battery snap
-6v motor (I got mine from a CD player)
-largish gear for your motor
-6 common ANODE RGB LEDs
-male header pins
-6v AA battery pack
-18 200 ohm resistors
So persistence of vision is just a fancy way of saying optical illusion. What it does is just flash LEDs so fast that your eyes are tricked into seeing things. I used Arduino's PWM to flash the lights and used a motor to turn it displaying a message.
I am not responsible for your stupidity and breaking things like people and vases because this project spins and stuff could fly off. Just use your brain and make sure everything is attached so you don't have and Arduino lodged in your gut.