It's been 4 releases of Lovelace now, and it's settling in nicely. As of 0.74 you can do anything you can do in the old UI, and more with e...
(This post is also contributed to the openHAB wiki)
The Systeminfo Binding enables you to read system information through Sigar. The system information provided through this library can be extended with some additional important features. For example, reading system temperatures for your Raspberry Pi.