Chapter 12

Building the dashboard

All the readings are in — time to give them a face. We supply a finished dashboard to paste in, built entirely from stock cards. One thing first, because it puzzles almost everyone: right after setup you see nothing at all.

8 minutes Last verified: 22.09.2026 DE EN

Why the home page stays empty

If you go to Overview now, you will probably see empty tiles for living room, kitchen and bedroom — and nothing from your CampMatic. That is not a fault.

The overview only shows what is assigned
The Home Assistant home page sorts by areas. Entities not assigned to an area simply do not appear there, however many of them there are. So you did everything right, it just is not being displayed.

Assigning an area

This is quickly done and worth it, because it makes the automatic overview useful as well:

Create an area

Settings → Areas & Zones → Create area. Call it Motorhome, for example.

Assign the device

Settings → Devices & Services → MQTT, click your CampMatic, then use the pencil icon at the top right to pick the area. All entities of the device follow automatically.

Your own sensors
The sensors from the previous chapters do not belong to a device and therefore stay without an area. That does not matter for the dashboard below, where they are listed individually. If you want them in the overview too, assign them one by one: Settings → Devices & Services → Entities, click the sensor, choose an area.

The finished dashboard

The goal from the start of the guide, now ready to build — heating, gas, climate, battery and connection on a single page:

Figure 11.1The finished CampMatic dashboard with live values. The Truma LevelControl figures are example values. The card titles in this screenshot are from the German edition.

To set it up:

Create a new dashboard

Settings → Dashboards → Add dashboard → New dashboard from scratch. Give it a title and a URL path.

The path needs a hyphen
Home Assistant rejects paths without one. So campmatic will not work, campmatic-dashboard will. The error message is easy to miss.

Paste the configuration

Open the new dashboard, click the pencil at the top right, then Raw configuration editor in the three-dot menu. Select everything in there and replace it with the contents of the downloaded file.

Replace the name fragment

The file uses <ENTITY> as a placeholder. Replace it everywhere with your name fragment from chapter 5 — grand_california_003, for instance. A search and replace in the editor does the job.

Excerpt — the full file is available for download yaml Download 
views:
  - title: CampMatic
    path: campmatic
    icon: mdi:rv-truck
    type: sections
    max_columns: 3
    sections:
      - type: grid
        cards:
          - type: heading
            heading: Heating & Hot Water
            icon: mdi:radiator
          - type: tile
            entity: select.hot_water
            name: Hot Water
            features:
              - type: select-options
          - type: tile
            entity: sensor.<ENTITY>_truma_wassertemperatur
            name: Water Temperature
          ...
No extra cards needed
The dashboard uses only cards that ship with Home Assistant. You need neither HACS nor any other add-ons.

Adjusting it

A few places you will probably want to change:

Wi-Fi or mobile version?
The Mobile Network section only works if your CampMatic has a SIM card. On the Wi-Fi version those entities do not exist and the cards would stay empty — simply delete the section in that case. The remaining connection values (Wi-Fi signal, IP address) exist on both versions.
Sensors you do not have
Cards for missing sensors show Entity not found. Delete those sections — the whole Gas Bottle 2 group, for example, if you do not own a Truma LevelControl.
Thresholds for the gas gauge
The colour thresholds are set to green from 40 percent and yellow from 20. If you want warning earlier, change the numbers under severity.
Done
  • Your CampMatic is assigned to an area
  • The dashboard shows heating, gas, climate and battery
  • The hot water selector can be switched