Check out my new project on sending a balloon into space!!
Step 1: What in the world is and LED?
Step 2: Materials you will need.
• 27 LEDs - radioshack sells 20 for 3 bucks. You can go to digikey, or be smart and get two packs of assorted LEDs at radioshack.
• Arduino Programming Board - Go to the maker shed or arduino.cc
• Some like 2ft of wire(choose your favorite)
• A breadboard for connecting all the pieces.
• A soldering iron!
and your set to go!