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 ...

In Listing 3, you can see that the reading from the potentiometer is used to control the delay time, so the effect of fading in and out is produced. Next, let's use an electronic component called a ...