*.*_SCHEMA deprecations
In order to align all of the top level platform components (listed below), we are deprecating the *_SCHEMA constants that are present. Some examples are SENSOR_SCHEMA, SWITCH_SCHEMA and so on.
Blog
About the removal of support for custom components
ESPHome's "custom component" mechanism was a holdover from Home Assistant's feature by the same name. It existed before external components and offered a way to "hack in" support for devices which were not officially supported by ESPHome.
Hello Developers!
Welcome to the first post of this new ESPHome Developer Documentation. This is a place where you can find all the information you need to start developing for ESPHome. This website will cover everything you need to create components and how to structure your code so that it will be easy to maintain and understand.