The duty cycle of PWM (and therefore LED brightness) is calculated by scaling a 0 to 3.3 V input voltage, set by a potentiometer connected to an analog input pin. The blink interval is fixed and has ...

GitHub - ShekoG1/Arduino-Speed-Control: This Arduino project demonstrates a basic LED control concept using a potentiometer. The intensity of three LEDs is controlled based on the potentiometer's ...

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 ...