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 ...

If so, you can consider a Kalman Filter to stabilize the knob control/ potentiometer readings. Quick note: ATmega based Arduino boards (UNO ... input from a potentiometer and produces a fair LED fade, ...

Here’s an altered PCB that gives USB control ... nine RGB LEDs. The stock controller has a color selection wheel and a couple of buttons. [Rikard Lindström] wanted to use it to match ambient ...