Arduino Practical Workshop - Rotary Potentiometer Module

Experiment: Rotary Potentiometer Module

Potentiometer

1. A potentiometer is essentially a variable resistor. Its function in a circuit is to produce an output voltage that maintains a specific relationship with the input (applied) voltage, which is why it is called a potentiometer. It is generally designed to preserve its original properties over extended use. When employed as a position sensor, a potentiometer can serve as either a linear or rotary position sensor. The device outputs a voltage value that correlates directly with the position along the slider of the variable resistor. However, factors such as temperature fluctuations, wear, and the accumulation of debris between the slider and the variable resistor can alter resistance, thereby impacting the accuracy of the potentiometer, leading to relatively low precision. Nonetheless, advancements in materials, particularly conductive plastics, have enabled potentiometers to retain their initial characteristics even after long-term use while enhancing their overall performance.

Main Parameters of Potentiometer

1. The primary parameters of a potentiometer encompass its nominal resistance, rated power, resolution, sliding noise, resistance variation characteristics, wear resistance, zero resistance, and temperature coefficient.

1. Nominal Resistance and Rated Power of Potentiometer
2. The resistance value marked on the potentiometer is called the nominal resistance.
3. The rated power of a potentiometer refers to the specified conditions in a DC or AC circuit at an atmospheric pressure of 87~107kPa and at the designated temperature.

Simulated circuit diagram

Graphic programming as shown.

Experimental data received from the serial port.

Visualization-driven simulation programming.

Tag: Rotary Potentiometer Module; Electronic component; Electronic component procurement