Yesterday, I tried to use the digital IO in my opi zero3, with the Python GPIO package from https://opi-gpio.readthedocs.io/en/latest/ by Richard Hull
It depends on having sysfs files in /sys/class/gpio/
My original opi zero has these files and it works, but my opi zero3 doesn’t have these files
I learned that /sys/class/gpio is created if the linux kernel is configured with a specific option ON, as suggested in the documentation:
https://github.com/rm-hu