From TheTNR on Hackster.io:
A quick intro to POV or persistence of vision: Any AC voltage light is actually blinking on and off at a frequency of 60hz or 60 times per second. Our brains perceive this as constant light. It is this concept which we will be taking advantage of, in order to create a spherical image using a single row of LEDs. We used 58 LED for each half. So you need totaly 116 LEDs. And will use a 3D printer for circle. You will find details on video.
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