The wiper of the 10K potentiometer is wired to A0 of Arduino (5V-A0-GND), while anode (A) of the test LED is linked to D5 through a 220Ω-470Ω resistor and cathode (K) to GND. #include ...

This simple setup serves as a foundation for demonstrating the basic functionality of GPIO control. The LED can be switched on and off, while the push button allows for user interaction and input ...