21+ Arduino Mega 2560 Interrupt Pins Pictures. In arduino uno, nano the pins used for interrupt are 2,3 & in mega 2,3,18,19,20,21. What is a interrupt service routine?

Arduino For Kids Young And Old By Daniel Milligan By Memik Issuu
Arduino For Kids Young And Old By Daniel Milligan By Memik Issuu from image.isu.pub
The arduino mega 2560 is a replacement of the old arduino mega, and so in general reference, it will be called without the '2560' extension. Due to the many numbers of pins, it is not usually used for common projects but you can find them in much more complex ones like radon detectors, 3d printers. This function must take no parameters and return nothing.

Within the hardware interrupt there are two categories:

Mega2560's have six intx pins, vs two such on uno's. Direct use of interrupt numbers may seem simple, but it can cause compatibility trouble when your sketch runs on a different board. Different types of arduino board have different numbers of interrupts pins e.g. Specify the input pin that is used for external interrupt here.