Connect up to 10 buttons using a single interrupt.
Purpose of this project is to write a code to control coin acceptor with Arduino so it can be used in other projects
While debouncing needs improvement, it's a good start to understand interrupts!
Learn the basics of programming timer interrupts on the ATmega328P.
You've conquered timer interrupts in Pardon Me, part 1. Now, keep that timer synced to an external source with pin change interrupts.
