You’ll need an Arduino (we’ll use an Uno R3), various lengths of wire, a USB cable to connect to your computer, and a breadboard, and a potentiometer, which can be used as a knob for ...

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 ...

So, if you want to regulate LED brightness linearly to your eye, it requires some clever thoughts and adaptations. First, upload the following PWM sketch to your Arduino Uno r3/Nano v3 and connect a ...