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Fingertip top display system based on Persistence of vision

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DOI: 10.23977/iceccs.2018.016


Wen Jing, Liu Hao, Yuan Lingjuan, Wang Zixuan, Ren Zhigang

Corresponding Author

Liu Hao


The LED display bar, such as a "fingertip top", is a "high-tech" toy made using visual retention effects. At rest, it's just a couple of LED light-emitting diodes (or LEDs), and as it rotates at a certain frequency, it changes (lights on or off) depending on where it is, eventually displaying an image or a string. This design makes an LED display bar. LED lights are arranged in a linear way, and the fan section formed when rotating can be used to distinguish Chinese characters or patterns such as "fierce my country", "me and my chasing dream", rotating speed, love, etc., and the display content can be switched with the button.


POV, SCM, sensor, LED, MCU

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