20-12-2012, 03:33 PM
Led Propeller Display
[attachment=44604]
INTRODUCTION
Propeller is a term associated with a circular rotating object. As this project needs to rotate whole circuit assembly, there must be some prime mover attached to it. So, the term ‘Propeller’. This project using bright light emitting diodes for displaying the characters and symbols on its assembly. That’s whythis project is named as ‘PROPELLER LED DISPLAY. ‘ This is the phenomenon which is related to vision capability of human eye by which an afterimage is thought to persist for approximately 1/25 th of a second. So, if someone is observing the images at a rate of 25 images per second, then they appear to be continuous. The best example of this property is the red circle we observe when we rotate the firecracker or incense stick in circle. This project was started with a simple principle which is frequently encountered in our everyday life,
Mechanical Assembly
Mechanical assembly plays a vital role in proper functioning of this project. The display is scanned each time, by rotating the whole assembly in a circular path. The basic idea we developed is on our own, by implementing and modifying different ways to do this. Following diagram shows the most reliable way, that we finally selected. Here, one major challenge was how to bring +5V supply to the spinning circuit.
CONCLUSION
It can be concluded that this paper is suitable for LED text display. There can be further upgradation in the paper which could lead to a much better system for led display.
[attachment=44604]
INTRODUCTION
Propeller is a term associated with a circular rotating object. As this project needs to rotate whole circuit assembly, there must be some prime mover attached to it. So, the term ‘Propeller’. This project using bright light emitting diodes for displaying the characters and symbols on its assembly. That’s whythis project is named as ‘PROPELLER LED DISPLAY. ‘ This is the phenomenon which is related to vision capability of human eye by which an afterimage is thought to persist for approximately 1/25 th of a second. So, if someone is observing the images at a rate of 25 images per second, then they appear to be continuous. The best example of this property is the red circle we observe when we rotate the firecracker or incense stick in circle. This project was started with a simple principle which is frequently encountered in our everyday life,
Mechanical Assembly
Mechanical assembly plays a vital role in proper functioning of this project. The display is scanned each time, by rotating the whole assembly in a circular path. The basic idea we developed is on our own, by implementing and modifying different ways to do this. Following diagram shows the most reliable way, that we finally selected. Here, one major challenge was how to bring +5V supply to the spinning circuit.
CONCLUSION
It can be concluded that this paper is suitable for LED text display. There can be further upgradation in the paper which could lead to a much better system for led display.