History-graph scaling

can I have the graph always show 0 on y axis?

Currently it is possible with custom cards only like mini-graph-card.

(untested) as a workaround: create a history-graph with TWO entities:
— some your sensor;
— a special template sensor which is always 0 and with SAME unit_of_measurement,
then your graph will have Y-axis starting from 0.
And the 2nd graph (zero) may be hidden by card-mod.

Update: well, it was actually tested and described here:
card-mod thread → 1st post → link at the bottom → styles for history-graph → how to set a 0 lower bound for Y-axis

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