Homekits big plus is that it has to by design offer local control.
Completely agree. That is the thing I like best about it.
Thread is interesting but is just a refinement of zigbee.
It is a has a very different philosophy than Zigbee (even if the physical layer and modulation are the same/close).
It is basically the difference between ZeroConf and UPnP:
Zeroconf is a very precisely defined, compact trio of industry-standard network technologies that work in concert to provide a reliable foundation for effortless networking. The word foundation in that sentence is significant. What vendors choose to build on top of that reliable foundation is largely up to the vendor in question. Zeroconf is mature, stable, and in certain product segments it is already very widely adopted.
In contrast, UPnP is an open-ended collection of device-specific protocols. As each new device type comes along, the UPnP Forum creates a new working group to talk about how that device type should work. UPnP claims adoption in many network devices, but in reality the adoption is more in name than in spirit. For example, many printers claim to implement UPnP, and indeed examining the network with a packet sniffer will show that the printer is sending UPnP SSDP packets, but Windows doesn't actually use those packets to discover, configure, or use the printer. This lack of any actual useful customer benefit is a common phenomenon in the UPnP world.
Zigbee tries to define a million different, often overlapping and incompatible, profiles as part of the standard. With functions that include service discovery and addressing, it duplicates many things that standard IP networks have done for years in an incompatible way.
Thread is just a physical layer, modulation scheme and standard IPv6 with support for ZeroConf built in to it. This means that nothing but the endpoints need to be updated to support a new device type.
Many zigbee devices can actually be flashed to support Thread. Philips has mentioned they will make their bridge thread compatible but not individual bulbs and devices...
I am not sure what Philips means by that, unless they are saying they will make their bridge act as a Thread Border Router, in that if the devices do not support Thread, and the bridge already has WiFi, I am not sure why I would want to connect their bridge to the net using thread instead of WiF.
Its a shame Zwave never caught on but the tech is solid.
Not a big fan. It is sort of a mesh, but with required controllers that can be single points of failure. The only nice thing is that is supported 900MHz which has better in building coverage characteristics.
I do little "automation" but remote access and control is worth it.
I have lots of little things, adaptive lighting, scene control ("Hey Siri, movie time"), and some climate control, but until I have U1 chips and, with them, much better presence detection, I am not doing more.
