@eyesallin this is an issue with the latest RPi5 kernel. Until a fix is available a workaround is the following command:

sudo ln -s /dev/gpiochip0 /dev/gpiochip4

More info about it:

https://raspberrypi.stackexchange.com/questions/148946/lgpio-can-not-open-gpiochip-lgpio-seems-unable-to-open-gpiochip-devices

https://github.com/gpiozero/gpiozero/issues/1166

@eyesallin This has been quicly fixed in the python-gpiozero package and the workaround is not needed anymore.

@sdetweil duh - I didn’t see that I can scroll down the error message

@sdetweil yes - all that is needed is …/2.5/… -> …/3.0/…

@sdetweil I testet your branch and so far it looks good with my test calendar and also with my real ones.