With the Home Assistant integration, Rhythm uses HA as a light hub: it reads your HA areas and light entities and drives them with the circadian engine. Whatever HA can already control — Zigbee, Z-Wave, Wi-Fi, Hue-via-HA — becomes something Rhythm can conduct, no per-vendor work required.
How it works
The hub opens a WebSocket to your Home Assistant instance, authenticates,
and pulls the registry — areas, devices, and light.* entities.
Each HA area with at least one light becomes a Rhythm room. To set lights,
Rhythm calls the standard light.turn_on service with a
brightness and a color temperature (or an xy color for bulbs
that prefer it).
Connecting
- In Home Assistant, create a long-lived access token (your profile → Security).
- In Rhythm, add a Home Assistant hub and give it your HA address (e.g.
http://homeassistant.local:8123) and that token. - Rhythm connects, imports your areas, and starts driving the lights.
What syncs
- Areas → rooms. Any HA area containing a light entity is imported as a room.
- Light entities. RGB, tunable-white, dimmable, and on/off lights are all driven; Rhythm sends what each can take.
- State feedback. Rhythm listens for state changes so its picture of each light stays in sync when something else changes it.
Run Sync any time you add or rearrange lights in HA to pull the
changes across.
Buttons and motion
Rhythm subscribes to HA's event bus and reacts to the events your devices
already fire — zha_event for Zigbee remotes,
hue_event for Hue accessories bridged through HA, plus motion
from binary_sensor entities. A button or sensor self-registers
to its area the first time it fires, so you don't have to enumerate every
remote up front.