Rotating Message board using PIC12F629

A simple rotating display. Just spin and enjoy. While the "Air display" is rotating, it writes the message on the air. Because of the "persistence of vision", you will be able to read the message. The operation is super simple and you don't need a user manual. Press the button to turn it on. Press the button to change the message and press the button to turn it off. NOTE: Use high brightness LEDs to use it in daylight. UPDATE: May 27, 2004 I found a web page selling a similar product: http://www.theskyliner.com - you can visit the webpage to see how this works. My Air display has 15 messages. The sky liner has only 10.

The rotating display system, often referred to as an "Air display", employs the principle of persistence of vision to create the illusion of a continuously visible message. This device typically consists of a rotating arm or disc mounted on a motorized shaft, which allows it to spin at a controlled speed. Attached to this rotating mechanism are high-brightness LEDs arranged in a linear or circular fashion.

The operation of the display is initiated by a simple user interface, typically involving a single button. When the button is pressed, power is supplied to the motor, causing the display to rotate. Simultaneously, the microcontroller within the system activates the LEDs in a sequence that corresponds to the message intended to be displayed. The timing of the LED activation is critical; it must be synchronized with the rotation speed to ensure that the human eye perceives a complete message rather than individual flashes of light.

To enhance visibility, especially in daylight conditions, high-brightness LEDs are recommended. These LEDs provide the necessary luminosity to ensure that the message is clearly visible even under bright ambient light. The system may also include a secondary function to change the displayed message. This is typically achieved by pressing the button again, which prompts the microcontroller to cycle through a pre-programmed list of messages stored in its memory.

Power management is an essential aspect of the design. The display may be powered by batteries or a direct power supply, depending on the intended use case. A low-power microcontroller is preferred to prolong battery life if batteries are used.

In summary, the Air display is a simple yet effective electronic device that utilizes rotating LEDs and persistence of vision to convey messages dynamically. Its ease of use and minimalistic design make it an appealing option for various applications, from advertising to personal expression.A simple rotating display. Just spin and enjoy. While the "Air display" is rotating, it writes the message on the air. Because the "persistence of the vision", you will be able to read the message. The operation is super simple and you don't need an user manual. Press the button to turn it on. Press the button to change the message and press the button to turn it off.

NOTE: Use high brighness leds to use it in daylight. UPDATE: May 27, 2004 I found a web page selling a similar product: http://www.theskyliner.com - you can visit the webpage to see how this work. My Air display have 15 messages. The sky liner have only 10.

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