Spinning Rings

Project Number: 55

OBJECTIVE: To build an electronic spinner.

Description: Setup: Cut out the disc on page 46 that looks like the one shown here. Using Scotch tape, attach the disc with the printed side up on the top of the fan blade. Place the fan blade on the motor (M1) as shown to the left and below. When the press switch (S2) is pressed, the arcs will turn into colored rings with a black background. Notice how the color drops in brightness when it is stretched to make a complete circle.