Interrupt quesion - Microcontrollers - Arduino Forum
Problems with interruptions and synchronization - Project Guidance - Arduino Forum
External Pin Change Interrupt not working Instantly - Programming Questions - Arduino Forum
Using Arduino Interrupts - Hardware, Pin Change and Timer
Arduino Interrupts Tutorial - YouTube
GitHub - joeSeggiola/jamman-arduino-sync: An Arduino project for syncing the JamMan Solo XT looper pedal (and compatible ones) to any analog clock/pulse input, for example from Korg Volca units, Arturia sequencers and synthesizers,
Using Arduino Interrupts - Hardware, Pin Change and Timer