I have successfully made an awesome integration for RevPI for Home Assistant!
It includes a Lovelace card where you can see and manipulate your module settings.
The integration should automatically read your rsc and create the needed devices to interact with.
(only bought one CPU and one module as it is pretty expensive, so could not test more yet)
See https://github.com/partach/ha_revpi/blob/main/README.md for all the details.
It is and extensive how to
I have an open point regarding connecting the integration via another HA instance in the network. See Readme part at the bottom.
If anyone could help with that or any other contribution it would be very much appreciated