Can We Use Interrupts in Arduino?

Arduinos can have more interrupt pins enabled by using pin change interrupts. In ATmega168/328 based Arduino boards any pins or all the 20 signal pins can be used as interrupt pins. They can also be triggered using RISING or FALLING edges.

How do interrupts work in Arduino?

An interrupt is a signal that tells the processor to immediately stop what it is doing and handle some high priority processing. ... An interrupt handler is like any other void function. If you write one and attach it to an interrupt, it will get called whenever that interrupt signal is triggered.

How many interrupts can Arduino handle?

Both of them need interrupts so they need to be 3 interrupts but the Arduino UNO only supports 2.