The potentiometer provides an analog value, and that is converted to control: The width of a loading bar on the OLED display. The angle of the servo motor. The OLED screen gives a graphical indication ...

This project uses two Arduino boards to control the speed of a DC fan using a potentiometer. Three LEDs indicate different speed ranges: red for slow, green for medium, and blue for fast. The serial ...

We set the potentiometer pin as 0 (A0 on the Arduino Uno board), the CONTROL variable is the voltage that is used to cotrol the led brightness of the speed of the fan. In the setup() function the ...

Run this code after you have uploaded the server sketch (Listing 5) to the Arduino. Controlling a Servo. Now, let's make things move with your Arduino code. For this example, let's control the ...