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 ...

This is just a fun Arduino project that uses leds connected in circle as a ring to produce a rotation effect. ... You will need an Arduino board, a potentiometer ... (#21). Then store this value ...

Using an IRFZ44N, I made a simple LED driver and used an Arduino Uno directly. Remember the Arduino pins go up to 5V and I used the fade example that generates PWM out of the box.

The biggest use-case scenario is when the function of this knob is software-defined, and/or must be adjustable from multiple locations (e.g. a remote control panel). Putting the LEDs around the ...