I would like to transfer this project made with a PIC microcontroller into an Arduino Nano:
http://luxmonday.com/2018/07/26/modifying-a-boss-rc-3-to-add-a-korg-sync-output/
The link contains both the PIC code and the circuitboard.
I have tried contacting the author but I have not been able to.
If anyone is up for the challenge, let me know and send me a quote.
Best
Lameller