Fully Kiosk is a popular solution – glad to hear you found it.
There’s also device drivers for Fully Kiosk available that would enable you to control your Fully Kiosk instance from rules. (Fully Kiosk Driver links in this thread)
The driver comes with a basic loadUrl() command which you could use to change which dashboard is loaded… once you get that figured out, you might be interested in the Fully Kiosk Fast Navigation trick which is a much more efficient way of changing which dashboard is loaded.