Arduino Rotating LED Display That Prints Text on Air POV
Build an Arduino-powered Rotating LED (POV) display that projects text in mid-air, mastering coding, LEDs, and sensor integration.
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Course Description:
Make an eye-catching Rotating LED Display That Shows Infinite Words in a Small Space | POV | Propeller Display
A Rotating LED display is an amazing, eye-catching display that you can make easily and use in your office or sell as a product. Rotating LED Displays, also called POV (Persistence of Vision) Displays, are based on the Arduino Nano. The Arduino Nano is very small in size, cheap, and has an onboard programmer, so it doesn’t need any external programmer.
A Rotating LED Display or POV Display is a rotating LED strip, usually requiring fewer than 10 LEDs. These LEDs blink according to alphabets, which show visible words. The “POV display” or “Rotating LED Display” is just an eye cheat; our eyes cannot differentiate the very fast movement of LEDs turning on and off. In this ‘POV display,’ the LED strip rotates very fast (more than 500 RPM) and the LEDs make a pattern according to the alphabets, allowing us to see the words or alphabets.
In the rotating LED display, Arduino controls the LEDs and creates a blink pattern. A pair of IR LEDs (Infrared LEDs) and a photodiode, and sometimes a Hall effect sensor and a magnet, are usually used for determining the starting point of the rotation. When the circuit of the POV display crosses over the white strip, the photodiode detects it and starts the LED strip according to the alphabets, creating the same pattern each time so we can clearly see the alphabets.
What you'll learn:
- Discover what is POV - Persistence of Vision
- Make an Arduino Rotating LED Display That Prints Text on Air POV
- Coding your Arduino to display text using a very small number of LEDs
- Interface Arduino with LEDs and sensors to display text on Air
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