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Get an arduino
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Get some of these http://cgi.ebay.com/10pcs-8x8-Dot-Matrix-3mm-dia-Bicolor-LED-Display_W0QQitemZ350265442211QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item518d727fa3
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Once you learn how to drive item 2 with item 1 just scale it up
Alternatively you could get the 1st item you linked, but that's more expensive ![]()