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The System Metrics card
Theatrium ProWorks with: Home AssistantAbout 1 minute to set up
A round gauge for any percentage, processor load, memory, humidity, from a Home Assistant sensor.
What it shows
One big dial from 0 to 100 percent, colored green through red as it fills, with a word beside it (Low, High). It was made for a home server's processor and memory, but any percentage sensor fits.

Add the card
Every card is added the same way. If you have done this before, skip ahead.
- On the dashboard, move to a card you want to replace. Press and hold the center of the remote's pad for about a second. The card dims and a Modify button appears on it.
Hold the center of the pad on the card you want to change. - Press the center once to choose Modify. The Choose a card screen opens.

The Choose a card screen. The list down the left side narrows the cards by group. - On the left, choose Home, then move right and choose System Metrics. (You can also leave the list on All and scroll; cards are in alphabetical order inside each group.)
- Pick a percentage sensor. Sensors with a % unit, and ones named for CPU, RAM or memory, are listed.
- Finish with the Add to Dashboard button (on some cards it reads Add System Metrics). You return to the dashboard with the new card in place.
Good to know
- Display only.
- For this Apple TV's own processor, memory and storage, use The Apple TV Performance card instead; it needs no smart home.