A follow-up to 2026.9.0 that sharpens the details: the card follows your Home
Assistant units, the weather reads truer (no phantom rain, real rain and snow
intensity, and the right regional model at borders), the live cost chip stays
honest when a price source lags, the battery flow self-corrects, and the
entry-tablet fix now reaches the Home Assistant app.
Added: follow your Home Assistant units (temperature, and W/ft2)
The temperature readouts (chip, detail panel, timeline tooltip) now follow your
Home Assistant unit system, so an imperial install reads Fahrenheit like
every other entity. A local temperature-entity in °F or K is normalised at
ingest too, fixing a case where its readings were stored as if they were Celsius
and polluted the curve. The irradiance unit gains W/ft² alongside W/m²
and kW/m². Thanks to @danswett.
Fixed: the live cost chip no longer freezes on a stale price
When a cost statistic lags (a utility integration that backfills a day at a time
can sit hours behind), the live cost chip could freeze on an old bucket and show
it as "now". It now falls back to price times power when the statistics go stale,
checked per direction, so the chip stays live. Thanks to @danswett.
Fixed: the battery flow direction now self-corrects
The live battery chip and its flow take their direction from the battery's power
sensor, assuming Home Assistant's discharge-positive convention. Some batteries
report the opposite, so the flow (and the animated dot) ran backwards even though
the Energy dashboard was right. Helios now cross-checks the live sensor against
your directional charge and discharge energy meters and corrects the direction
automatically, with nothing to configure.
If you had set the battery sign option to work around this, your chip may now
read backwards: set it back to the default. That option is, and always was,
only a display preference for how the chip shows + / -; it never affects the
flow, which is why it could not fix the direction. It is now labelled to make
that clear.
Fixed: no more phantom rain under a clear sky
The scene drew rain from the faintest trace of forecast precipitation, so a
hundredth of a millimetre in an hour, the kind a clear-sky forecast still
reports, could sprinkle rain across a cloudless scene. Precipitation below a
light-rain threshold now stays dry; real rain and snow still paint. Thanks to
@FoxP and @MatCos.
Changed: rain and snow show their real intensity
The amount of rain or snow the scene drew climbed too fast and then flattened
out: a trace already looked like steady rain, and everything from a moderate
shower upward drew the same, so a downpour and a violent storm were
indistinguishable. Rain and snow density now follow the standard meteorological
intensity classes, so a drizzle reads light and a storm reads heavy, across the
full range. Thanks to @MatCos.
Fixed: border locations get the right regional weather model
Helios pairs a global weather model with the best regional high-resolution one
for your location. The regional coverage areas overlap at national borders, and
the first area listed used to win, so a place near a border, or anywhere inside a
smaller area enclosed by a larger one, could be read with a neighbour's model.
The card now picks the area your location sits most centrally within, so the
regional model matches where you actually are. Thanks to @MatCos.
Fixed: the entry-tablet flicker fix now reaches the Home Assistant app
2026.9.0 moved entry-level tablets onto a lighter drawing path to stop the whole
view flickering, but it recognised the affected graphics only when the browser
exposed the chip name. The Home Assistant app and kiosk WebViews hide that name
for privacy, so the flicker returned inside them even though Chrome on the very
same tablet was fine. On Android, Helios now treats a hidden graphics name as
reason enough to use the lighter path, so the app and kiosk views are covered too.
Thanks to @charleslales and @Richaaldo (#370).
