For those starting out in Arduino, there are tons of resources to get better acquainted with the community and the types of projects you can tinker with.

Sketch: Interrupts Interrupt – incorporated since the 0007 version of the Arduino IDE – breaks in in the execution of the main code. On the hardware front, Arduino is equipped with two interrupt ports ...

Drivers for the stepper motors were made using Arduino interrupts, which are useful for projects that need quick and precise reactions by sending a signal to "interrupt" the current operation.