I created a simple tracker to track how long my Thermostat was in each operating state.
Code can be found here:
Create a virtual device using the Thermostat History Tile display
link to that tile in the app under Display tile:
add a tile to your dashboard:
Selecting the tile, template:Attribute, and the attribute can be "Today,Yesterday, or X Days Ago"
1 device can display all the history tiles, just create more tiles and then link using the display Tile.
Updated to 1.0.1 to fix a rounding error. I couldn't deal with only having 23:59 minutes in a day...
Updated to 1.0.3 to fix a typo...
Updated to 2.0.0 adding Dashboard support
Updated to 2.0.1 adding Hubitat Package support and removing a bug.