Abstract
Based on the vision persistence principle, a novel clock with rotating LED display is developed. 8-bit microcontroller AT89S52 is used as the core controller. The rotating board is made up of the core controller, 20 LEDs and other components. Magnet is used to complete the synchronization. Each time the board passed the same place, a Hall Effect sensor perceived the magnet and generated an interruption. During operation, the microcontroller keeps track of time and changes the pattern of 20 LEDs with exact timing to simulate a 20x180 array of LEDs while the propeller is spin by the motor. The illusion of a flat image is produced by the moving LED array. The power source comes from the spinning armature of a DC motor since the clock is on a spinning piece of board.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Wikipedia, http://en.wikipedia.org/wiki/Persistence_of_vision
Wikipedia, http://en.wikipedia.org/wiki/Led
Chen, X., Tang, C.: Intelligent LED Display Technology with SCM and CPLD. In: Proc. of IITA 2009, pp. 260–263 (2009)
Davies, J.H.: Digital Input, Output, and Displays. MSP430 Microcontroller Basics, 207–274 (2008)
Cai, M.Q.: MCS-51 series single-chip microcomputer system and its application. Higher Education Press, Beijing (August 1992)
Intel corporation, MCS-51(tm) family of single chip microcomputers: Users manual. Santa Clara: Intel Corporation (1981)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
zelong, X., Hongbing, Z., Hao, H., Lianbo, J. (2011). The Design of Propeller LED Based on AT89S52. In: Zhu, M. (eds) Information and Management Engineering. ICCIC 2011. Communications in Computer and Information Science, vol 236. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-24097-3_82
Download citation
DOI: https://doi.org/10.1007/978-3-642-24097-3_82
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-24096-6
Online ISBN: 978-3-642-24097-3
eBook Packages: Computer ScienceComputer Science (R0)