This is an easy tutorial showing how you can control the brightness of an LED or adjust the speed of a DC fan using Arduino Board, a small BC547 transistor and a potentiometer. In my example the whole ...

A rotary encoder is a wonderful digital alternative to the old analog potentiometers ... greater detail of the code behind the rotary encoder + arduino experiment, as featured articles and great ...

Which led him to designing his own prototype Series Elastic Actuators using an Arduino, potentiometers, some elastics, and a geared DC motor. As he breaks it down in the video, it’s actually ...