For Korg Volca sync, there’s this page (in Slovak, but English (and Czech) translation is available at upper right):
https://www.arduinoslovakia.eu/blog/2021/1/korg-volca-signal-sync-out
For Korg Volca sync, there’s this page (in Slovak, but English (and Czech) translation is available at upper right):
https://www.arduinoslovakia.eu/blog/2021/1/korg-volca-signal-sync-out