We have the goods, now let's make something out of them. When you feed a hall sensor voltage, it only produces a current if there is a magnet close to the sensor. The closer the magnet, the better the current. Essentially, a hall sensor is a diode for magnetism. Common usages for hall sensors include detecting the speed (using 1 hall sensor) & direction (using 2 hall sensors) of motors. Thus, we should be able to create an encoder device for each motor in our differential (tank) drivetrain.
We have the goods, now let's make something out of them. When you feed a hall sensor voltage, it only produces a current if there is a magnet close to the sensor. The closer the magnet, the better the current. Essentially, a hall sensor is a diode for magnetism. Common usages for hall sensors include detecting the speed (using 1 hall sensor) & direction (using 2 hall sensors) of motors. Thus, we should be able to create an encoder device for each motor in our differential (tank) drivetrain.