Vishalapr made this Instructables detailing the build of his DIY POV Display based on ATtiny85:

The first time I saw a POV (Persistence Of Vision) display was on a show called FAQ on TV. The POV display consisted of an oscillating shaft with 6 LED’s mounted on the end of the shaft.
Since then I have always wanted to make one myself, I tried making one about 2 months ago with an oscillating shaft myself but I was not successful as the speed of the shaft was too low for the POV display to work. Now I decided to make the POV display with just a DC Motor instead of an oscillating shaft as they are much cheaper and easily available compared to the shafts.
In this instructable I will show you how to make the POV Display yourself!
This is a very simple project both on hardware and software (coding) areas. It costed me only about 5$ to make it from start to finish!

Check out the video after the break.