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 ...

Overview This project demonstrates how to control the brightness of an LED using a potentiometer (analog sensor) with an Arduino. The potentiometer’s value is read by the Arduino and mapped to control ...

The AD5241, AD5242, AD5280 and AD5282 are digital potentiometers. The AD5241/80 has one, the AD5242/82 has two potentiometers. Both types have two output lines O1 and O2. The main difference in the ...