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  Previous Guides: Getting to Know Arduino : Part 1 : Hello, World! Getting to Know Arduino : Part 2 : Hello, Again!   So after getting a little familiar with flashing an LED in Getting to Know Arduino : Part 1 : Hello, World! and Getting to Know Arduino : Part 2 : Hello, Again! of my Getting to Know Arduino, I have decided to throw a bit of a curve ball with my Part 3. So assuming that you already have picked up a Breadboard and some wires with your Arduino Uno. I decided that som ...