MAGNETIC WOBBLER FROM PERMANENT MAGNETS AND ELECTRIC MOTOR

MAGNETIC WOBBLER FROM PERMANENT MAGNETS AND ELECTRIC MOTOR

     I built a device from some pieces of wood and craft sticks with glue, a needle for the axle, a bead (from the craft store) as a bearing, a Phillips head screw for the bottom bearing, some button cell batteries, electrical tape, some mounting putty, a tiny electric motor from a toy quadcopter, a small switch and some neodymium magnets. It is shown below running at 1/3 slow motion:

     In general or for simplification, when the north pole of the magnet spins around to the outer point of the armature it moves the armature north a little. Likewise when its south end spins around to the outer point of the armature it moves the armature south a little. This makes the armature wobble side to side.