Starting at the exact time might be arranged by making them wait for a signal from the same push button. DPST switch, or similar. The two will certainly not stay together for very long unless both boards use the same clock signals.Can these Arduinos be placed right next to each other?Paul
Is this a professor of electronics or music?He sounds like it is music and has no idea about electronics.
It's an engineering orientation class. We are collaborating with another group, hence the two arduinos playing different parts of a song. Don't know why he just won't let us use 2 piezos though.