There are few parts/steps that you must complete to get animated 3D home using Klet3D:
Create 3D home
1. Register on Klet3D app: https://app.klet3d.com
NOTE: it is web app, you are accessing it over URL from any device you have – no need for downloading
2. Draw you floorplan – this will enable to get 3D digital twin of your home
3. Add 3D objects on floorplan (furniture, elements…) that you will connect with HA entities (lights, doors, windows, sensors…)
Setup 3D home on Home Assistant
4. Install and configure Klet3D add-on on Home Assistant
5. Connect 3D objects in HA with HA entities (e.g. connect 3D door with door sensor, or luster with light entity…)
6. Optionally – add add-on visualization to panel or card on your HA dashboard/homepage