According to the analog signal conversion structure distinction. Joystick is generally divided into Hall-type handles and potentiometer-type handles. The analog signal conversion of industrial joysticks is generally realized in three forms: a magnetic steel Hall structure, a brush resistor structure, and a finished potentiometer (there are two types of Hall type and brush type).

1. Hall-type joystick: It is composed of magnet steel, Hall chip, signal processing circuit, signal input, and output ports, etc.; the relative angle or linear displacement between the magnet steel and the Hall chip generates a signal; the advantage of the Hall-type handle: no contact, long service life, programmable; Disadvantages of the Hall-type handle: under extreme high and low-temperature conditions, there will be a certain temperature drift, and it may be affected by the external magnetic field in special environments;
2. Potentiometer type joystick: It is composed of brushes, signal processing circuits, signal input, and output ports or is a finished potentiometer; its working principle is that the brushes move on the conductive plastic to produce resistance changes. Advantages: stable signal output, less affected by temperature and magnetic field; Disadvantages: friction between brush and conductive plastic, easy to wear, short mechanical life.
Through the above introduction and analysis of two types of Joystick, hope it helps you.