![]() Or perhaps you start seeing a rapid rise in humidity in your bathroom then start the extractor fan. ![]() This could then allow you to run automations based on this value - one I could think of is if your tracking how much energy your solar panels are producing and you start seeing a large change in energy production, maybe that indicates it is a good time to start charging your car which kicks off an automation to do so. Some practical examples of this could be to track gas or energy consumption over an hour, maybe temperature or humidity in a room, or even how much water has flown through a sensor. This might be useful for tracking values where you aren’t necessarily concerned with the actual current value, but rather you want to see how much it's changed over a given time period. I’m no mathematician, that kinda stuff goes way over my head, but essentially the Derivative helper allows you to work out the rate of change of a value or sensor. The first new input helper that was added is called the Derivative, which you’ve probably heard used in mathematics. ![]() In the recent April update of Home Assistant, a bunch of new input helpers were added that allow you to work with and transform your data in even more ways than were possible before - let's take a look at each one! Video Derivative ![]()
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