In the hardware setup, MCP41010 is connected to the Arduino via the Arduino’s SPI Interface. Potentiometer terminals A (pin 5) and B (pin 7) are connected to the Arduino 5-volt supply (5 V) and Ground ...

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 we asked you to light up an LED using an Arduino, there’s a good chance ... Finally, arrange the LEDs in an attractive circle around a potentiometer. Wait, how are you going to do that?