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We wish you a merry christmas... on the run
posted December 9 2010 7:13.18 by Giorgos Lazaridis

Raj from Embedded Lab just published his new electronic project. Christmas is on it way, so he felt like making a big "Merry XMas" sign with running LEDs. This is a very nice example for those who want to learn how to interface multiple LEDs. For the 9 letters he used 9 transistors to control the LEDs. He used different limiting resistors according to the number of LEDs that each letter has. A PIC 16F688 controls the transistors, and thus the message run. The LEDs are fixed on a big black board, making a nice contrast. View his page for more info. Thanks [Raj].

[Link: Embedded Lab]
Tags: electronic project   pic   microcontroller   led   

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