Graph Card

hc_graph_card shows a sensor’s live numeric reading over Marao’s own 24-hour background trace. The trace reads Home Assistant recorder history once for the card, appends the current state, and needs no native history-graph card or other frontend resource. If no numeric history is available, the current reading remains visible and the background stays neutral. Loading and empty history have readable status text. A failed history request shows History unavailable while preserving the current reading. Unknown, unavailable, and disconnected graph sources stay neutral; history loads again after the source recovers.

Usage

  - type: custom:marao-card
    template: hc_graph_card
    entity: <sensor entity>
    variables:
      graph_color: <desired color>

Variables

Variable	Default	Required	Description
graph_color	Theme card text/accent color	No	Color for the graph line and fill.
graph_background	Transparent	No	Optional tint behind the graph, without replacing the card’s state background.
show_graph_line	true	No	Show the graph line.
show_graph_fill	true	No	Show the graph fill.
show_icon	false	No	Show the card icon.