Over on Hackaday.io we have a lot of people playing around with the possibilities presented by cheap printed circuit boards. Whether that means making a quadcopter from fiberglass or a speaker from etched copper, we’ve seen just about everything. Now, finally, we have a miniature magnetic racetrack. It’s an ant highway, or a linear motor wrapped around into a circle. Or a tiny-scale model railroad. Either way it’s very, very cool.
The ant highway comes from [bobricius], one of the many makers tinkering around with coils and traces. This time he’s built a ten centimeter square board that is, effectively, a