I haven't tested this on other arduino boards, but it is most unlikely to work, say, on a Mega since the program edits directly some registers that have different meanings depending on the board ...

This project controls the speed and direction of a DC motor using an Arduino, a potentiometer, and two push buttons. It requires an L293D motor driver IC to function ...

This design idea details how a standard volume control can be replaced by its solid-state equivalent. Digital potentiometers are often advertised as replacements for rotary volume controls. To ...