What is GPIO
GPIO (General Purpose Input/Output) is a pin on a microcontroller that you can control with software — set it HIGH (3.3V or 5V) or LOW (0V), or read whether an external device is pulling it HIGH or LOW.
GPIO (General Purpose Input/Output) is a pin on a microcontroller that you can control with software — set it HIGH (3.3V or 5V) or LOW (0V), or read whether an external device is pulling it HIGH or LOW.