POV (Persistence of Vision) display is a type of electronic display technology that uses persistence of vision to display an image or text. It works by rapidly flashing light-emitting diodes (LEDs) in a specific pattern to create an optical illusion of a static image. POV displays are often used in wearable devices and promotional products, such as LED wristbands and promotional toys.
POV displays work by rapidly flashing light-emitting diodes (LEDs) in a specific pattern, creating an optical illusion of a static image. The LEDs are usually mounted on a spinning disk and the pattern is created by controlling the activation of the LEDs in coordination with the disk's rotation. As the disk rotates, the eye perceives a continuous image due to the persistence of vision
When the PCB with the LEDs start rotating, the single line of LED array acts as a square matrix.
Let us see how this works with an example : Considering alphabet "A"
when the display starts rotating, the LED arrays change their values fast enough, which are not visible to human eyes. Infact it appears as a whole instead of single line values.
at Instance 1 :
At instance 2 :
at instance 3 :
at instance 4 :
at instance 5 :
These sudden changes take place so quickly that the human eye cannot see them. cumulatively, it appears as follows:
