The Arduino MEGA is official and even more expansive than we originally thought. It has 54 digital i/o pins. 14 of those can be PWM outputs. Along with 16 analog inputs and 4 UARTs. It is even ...

Arduino official foot number using digital serial number 1,2,3 ... , but in most unofficial version of Arduino transplants, more memorable and meaningful naming rules have been added, allowing us to ...