Custom component with existing sensor

[zoogara (Daryl)]

Ah - ok - wasn’t clear.

No idea but the last post in this thread may help:

How to pass a variable from Home Assistant to ESPHome custom component?

I know it is a bit late, but looking at the generated code it is clear the lambda gets the contructor component instead of your component. So all you need to do is cast it to your class in the lambda on_value: lambda: |- static_cast<MyCustomSensor*>(id(customSlider))->custom_value = id(light_bureau).state; then you id must be the returned component - platform: custom lambda: |- auto my_sensor = new MyCustomSensor(); my_sensor->custom_value = id(my_global_float); App.…