Learn how create a Color Spinner that changes colors!
What You'll Need
Conductive tape, 1 coin-cell battery, 1 push-pin, 1 RGB LED, a cardboard rectangle, and a cardboard circle.
Step 1: Place LED
Bend the legs of your LED so that you can place it flat on your cardboard base, like in the diagram. Orient the legs so that the Green is facing up, and Common Positive is facing down.
Step 2: Place Conductive Tape
Take your conductive tape and divide it into 6 strips so that you stick it to the board like in the diagram. You are extending each colored leg of the LED. Place the tape over the leg, to secure it onto the cardboard.
Step 3: Place Battery
Take one more piece of tape and place it underneath the battery, to make contact with the negative end. Leave a small gap between that piece and the green leg extension like in the diagram. Then take some electrical or other non-conductive tape and place it over the battery to secure the positive leg of the LED to the positive side of the battery.
Step 4: Prep Circle Piece
Now take the small circular piece of cardboard and draw an “x” in the middle. Take 2-3 pieces of conductive tape and place them next to each other, with one end near the center and the other going out towards the edge of the circle.
Step 5: Put It Together
Place the circle over the cardboard so that the x’s line up and the conductive tape is facing down. Now take your pushpin and attach the wheel to the cardboard base, so that it can turn.
Step 6: Test the Circuit!
You should see the lights turn on! As you turn the wheel the tape on the bottom of the wheel is closing a switch for the red, blue, or green path, thus changing the color of the LED!