A follow-up to 2026.9.0: the card follows your Home Assistant units, the live
cost chip stays honest when a price source lags, and the battery flow corrects
its own direction.
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 are unchanged. Thanks to
@FoxP and @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.