It’s the world’s simplest electric train! Why not make it with children to enjoy science?
Ever used magnets in a project, and had to fiddle around with it until it worked? Then you should have used a magnetic viewing film, so you could see the problem directly.
This is probably the easiest magnetic propulsion system in existence, and so easy to build!
You have probably heard about 3D printing, maybe even about 3D printed electrical circuits, but did you know that even magnets can be printed now? The 3D printing technology is definitely taking over the world!
With a magnetometer you can detect the existence and location of a magnet several inches away, perfect for so many robotic projects. You can even use it as a non-contact joystick as demonstrated it the video below this one: