The digital Potentiometer for your project: with our KY-040 rotary encoder, you can navigate through your self-created menu items, or speeds. Unlike analog potentiometers, the angle of rotation is not limited. In a practical modular design. With an additional switching contact!   Pinout Raspberry Pi: CLK = GPIO16 [Pin 36] DT = GPIO15 [Pin 10] SW = GPIO14 [Pin 8] + = 3.3 V [Pin 1] GND = Mass [Pin 6]   Pinout Arduino: CLK = [Pin 3] DT = [Pin 4] Button = [Pin 5] + = [Pin 5V] GND = [GND]