Back in 1832, the celebrated British physicist, Michael Faraday, carried out a set of experiments designed to answer a ...

Inside is a PWM controller which sends power to a small DC motor. A 3D-printed arm is ... As the arm spins inside the enclosure, the magnetic fields from the magnet couple with the stir bar ...

it moves parallel to the magnetic field, producing no force. This would tend to make the motor come to a stop, but two features allow the coil to continue rotating: This means that the current in ...

it was possible to squeeze a DRV8837 DC motor driver and a pair of hall effect sensors on the first PCB layer, with the magnetic encoder nestled tightly behind it. Pin headers at the edge of the ...

it moves parallel to the magnetic field, producing no force. This would tend to make the motor come to a stop, but two features allow the coil to continue rotating: This means that the current in ...