A potentiometer produces a variable analog voltage when its knob is rotated. The Arduino reads this voltage using an analog input pin. The PWM value is then sent to a PWM-enabled digital pin using ...

This project demonstrates how an Arduino Uno can control the brightness of an LED using a potentiometer and Pulse Width Modulation (PWM). As the potentiometer is rotated, the Arduino reads the ...

Looking for a simple circuit to control the light intensity of Light Emitting Diodes (LEDs) or similar lighting sources? Here is an Arduino based circuit with three independent pulse width modulated ...

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 ...