Real Life got in the way and that project got delayed, but I did eventually get it done. Along with all the red-series multi-tap shortcuts, like double-tap for 100% (which you have to do on ALL of them since the central scene commands go straight to the hub, not through the associations).
I was about to get started on a community post, when I received a Hubitat C7 as a gift… and I’m now in the middle of the long process of moving everything over from my ST v3 hub.
… Except for the things that Hubitat won’t talk to like IKEA buttons. The HE community seems to think that it’s because IKEA is doing non-standard stuff, but it feels to be like a ZHA vs ZLL issue. That stupid division is largely addressed in Zigbee 3, and I think the real issue is that Hubitat prioritied Z-wave upgrades in the C7, so it’s got a 700 Series Z-wave chip, but Zigbee is still on version 2. SmartThings seems to have gone the other route, with Z-wave 500 Series, but Zigbee 3. I was hoping for one hub that had the latest Z-wave and Zigbee, but I guess that would have meant going the HA route and buying my own Z-wave and Zigbee chips. Well, at least there’s HubConnect: I could keep the buttons (and maybe enough Zigbee repeaters to keep them happy) on ST, but move everything else, and the automations, to HE. Or maybe just leave all the Zigbee on ST. Either way, I’m taking my time doing the migration because HE is apparently much more finniky about HOW you build out your Z-wave mesh than ST was, so I’m moving devices over one room at a time; powered devices first, then sensors, and giving the mesh plenty of time to settle (and plenty of Z-wave repair runs) before the next batch. That kinda works OK for me because I can make it a weekend project: bring one room’s Z-wave devices over on Saturday, let the mesh settle, then bring the automations over on Sunday.
Anyways, the point in that long digression is that I’m going to need to do it AGAIN when I bring that room over to HE, so I might as well make a combined post about what I learned from both experiences. But the nutshell version is: make associations both TO and FROM the load-bearing dimmer from all the others (the remotes; too bad BFF isn’t ready). Make sure the switches are all included with the same security level or the associations will fail silently. Which association groups to use took a little experimentation which I’ll have to write up. Set the “association behavior” parameter to 15 (default) on the load-bearing dimmer and 11 (or even 1) on the others. Play with it. Then once you’re satisfied, setup your other preferences/parameters, red-series notifications, red-series button presses, and your automations… all of which will now need to take into account that there are multiple switches involved.