Hack Your Holiday Decorations

jfruhlinger writes "Tired of your code only executing in digital space? Why not hack your smiling snowman? OK, this crash course only shows you how to make pretty LED lights blink in a sequence of your choosing, but it serves to introduce you to Arduino, an open-source platform that uses C-like code. Really, any project that involves a soldering iron is good fun."

I did a lazy hack this year...

[Kenja]

I just soldered a bunch of three color blinking LEDs to some watch batteries and threw them at my tree. Actually turned out rather nice.