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Humberto writes in -

Ever had a message you wanted to tell the world around you? Ever wished you had a way of taking information and having it light up in front of you, a phalanx of diodes doing your bidding, emitting light on command to form out your epistle? This video outlines how to build your own large LED Array that can be used to display patterns, simple preprogrammed messages, or even scroll data from your PC. Using a microcontroller, and a whole lot of LEDs this tutorial walks through the concepts behind making this 24×5 display possible on only a single microcontroller chip. The tutorial explains row column addressing, demonstrates the use of the diode’s properties double the number of columns, and contains the complete source code for the project. It is great as DIY weekend project. Greatly extendable project with a lot of room to be creative

Phillip Torrone

Editor at large – Make magazine. Creative director – Adafruit Industries, contributing editor – Popular Science. Previously: Founded – Hack-a-Day, how-to editor – Engadget, Director of product development – Fallon Worldwide, Technology Director – Braincraft.


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