An LED chase effect project where a potentiometer is used to speed up or to slow the effect was done by Natalia and Melvin (France).
Here is the video of their chase effect:
Potentiometer & servomotor
A project (click on the presentation’s page to open the next one) made with an Arduino card and a DFRobot shield where a potentiometer is used to move a servomotor by Arhur & Elie (France)
Here is the video of this project:
Potentiometer & LED
How a potentiometer could be used to change the brightness of an LED?
You can find the answer in the article written by Elie & Arthur (France)
(click in the new window to change the page).
Here is the video of this circuit: