Hi,
after hesitating for a few months, I finally moved my last group of lights from Hue hub to ZHA. This was driven by the fact that the Hue hub does not offer any backup / recovery and three times I received an email saying my Hub had been reset.
Today the kitchen lights have been migrated. This is the most complex area as there are 16 lights in a grid controlled by the hue dimmer switch.
To keep track of the lights, I migrated one-by-one. Hue App - select light - delete, then HA ZHA add device, name and assign room.
16 devices discovered, most within ten seconds and one took several minutes.
I then created a light group and turned that on. The first time, 2 of the 16 came on then after a few seconds more would come on until there were five that did not respond.
After 60 minutes and a HA Yellow reboot, the lights have improved - one is still not reacting quickly. I though I would check the ZHA network visualisation:
Notice that NONE of these have any connection to the rest of the network! Though they seem to be mostly working.
With HA, how are commands transmitted to a set of lights that need the same settings - does turning on 16 lights send 1 command to 16 lights, or 16 commands that fight for resources? Are there techniques to help with this?
I did create a node-red script to animate the lights to turn on one-at-a-time, which seems to be fairly reliable, but this moves away from the scene functionality.
Hue Hub is powered off 
- I expect the new cloud setup they are introducing will enable a backup, but that’s too late for me.
Steve
