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 ...

The most common interactive input control for fading LEDs is a standard potentiometer. However, when you start controlling fade curves via the potentiometer wired to one analogue input of the Arduino, ...

Serial pinouts were confused, time and again, and there was regular double checking of cables to ensure the flow control pins were actually populated.