This Instructable will be showing you how to make these simple magnetic 'LED Rollies' these roll around your desk or table while you wiggle a Neodymium magnet under the surface. Try using these in the dark and impress your friends and family. This project does not require any soldering or gluing as everything is held in place via the magnets.
1 Large Neodymium Magnet (I scavenged mine from an old hard drive)
2 Small magnets (You can take these apart from magnetic toys)
3 LR930 Style batteries (I got mine from an old torch)
1 Roll of Tape (optional)
1 Table that is less than 3/4 inch thickness. (You can also use strong cardboard)
2 or more LEDs ( You can also make the effect with colour changing RGB LEDs)
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: Putting the Batteries Together
This part is very easy as all you have to do is stack the batteries on top of each other positive side up. Now Place the magnets on the top and the bottom of the battery pile so that one of the magnets is on the positive side and one is on the negative side.
Step 2: LEDs
Now get the LEDs and place the negative side on the negative magnet and so on. Do this for all the LEDs or the one color changing RGB LED that you have. They should all turn on if they haven't go back and check all the parts
Step 3: Play!!
Now with the Neodymium magnet under the table you should have full control of the LEDs so try to make them spin and dance around. Here are some of the photos that I made during the day. Don't forget to put the pictures of your "LED Rollies" in the comment section below and rate this Instructable. Have Fun!!!