Transitions not working

Hey guys - i am trying to create an automation that will trigger some lights to turn on in the morning gradually over a few minutes, so I thought perhaps I could leverage transitions; however, they do not appear to work at all - even when set to 2s. Are transitions platform specific? I am trying to do it ISY.

Just in case, here is my config. The YAML validates.

  • alias: “Wake up”
    trigger:
    platform: time
    after: ‘15:31:00’
    action:
    service: homeassistant.turn_on
    entity_id:
    - light.nates_room
    data:
    brightness: 250
    transition: 3

Yes, transitions are platform specific. At first they only worked with Philips Hue. It currently works with a handful of others (Osram?) What is your platform?

ISY. I can’t get it to work, so my assumption is that it doesnt work for this platform.

And if that is the case, I’m guessing if I wanted to build a “sunrise” simulation, I would have to create a script for that :frowning: Was looking for some examples here, but I wasnt able to find any

Edit: With some assistance, I’ve been able to find that the following platforms support it
Wemo
rpi_gpio_pwm
LimiitlessLED
LIFX
OsramLightify
Yeelight
mqtt
Hue

Landrash is looking at how the docs can be revised to better show this