Originally Posted by
BillD
My first post - I'm planning a move from Caseta to RA2 (not sure which level) and reading a lot of forum posts, but I think I can help here as it's the same issue in Caseta-land.
If you have HomeKit running in the home all you have to do is set up a HomeKit automation that is based on a trigger (conceptually similar to IFTTT). The easiest way is to set a trigger based on light level. (You could trigger based on Power State too, but there's more control with brightness level.) So:
1) Install iOS HomeKit control app "Home - Smart Home Automation" as the native Apple Home app does not show all available HomeKit functionality.
2) Program your Lutron button to set light brightness level to something non-standard like 98%.
3) In "Home - Smart Home Automation" app create an automation based on light level that triggers when the Lutron dimmer light level is 98%.
4) Set the action to turn on the Hue lights (and maybe set your Lutron dimmer to 100%).
It does stink that there is no official integration as Hue is a great product, and there are some cool reasons to mix Lutron and Hue products. Lutron even used to make a Pico-like controller that could control Hue (or other ZigBee lights) directly (but not part of any controlling apps), but they've discontinued that product. There's still demand for it - used ones can go for $100 even when new ones were about $20.