My new website www.blinkenlight.net just made it to hackaday Turning LEDs Into A Camera | Hackaday. I am really proud
Here are some POV experiments I did with the Blinkenlight Shield. If you want to see the code have a look here Persistence of Vision | Blinkenlight and/or here POV Generator | Blinkenlight.
If you want to see more pictures go here: Hello World! | Blinkenlight and scroll down to "October".
If you want to see more cool experiments look here: Blinkenlight | 20 LEDs are enough
I added an new and improved POV sketch here POV Reloaded | Blinkenlight. The functionality is the same but it is somewhat more readable.
I also have some experiment that is somewhat stuck. If anyone has expert advice on it please comment to my blog Thank You World! | Blinkenlight or answer in the Forum here http://arduino.cc/forum/index.php/topic,81097.0.html.