The Spirograph wheels and rings each have different numbers of gear teeth built along their perimeters. By varying the ring and wheel combinations you can cause the orbiting drawing path to rotate ...

Beneath the plate, two pairs of spinning magnets rotate around a double layer of 11×11 curved racks, which then play the role of the classic spirograph rings. An EV3-controlled motor powers the ...

A basic spirograph set includes plastic rings (stators) with gear teeth on the inside and outside. Gearwheels (rotors), also with teeth and holes for pens, are spun around the rings to create ...