I created a Home Assistant integration for creating and managing customizable scheduler curves. This allows you to define complex time-based control patterns for lights, climate systems, and other entities using an interactive graph interface.
Feel free to test it and submit any issues you might find. There will be some CSS issues as I am not the most skilled frontend developer.
In the future I want to add the ability to use custom X-axis, where you can use an entity state/attribute as reference. This will allow setting a heater depending on outside temperature for example. Also I try to get this added into the HACS repo library, but for you have to add this manually.
You can find it here:
https://github.com/schblondie/universal_scheduler
Best regards
schblondie