Has Hubitat fixed Z-wave?

[aaiyar]

@nclark

people with the C7 that installed external antennas seem to say that the problems they had before have pretty much disappeared.

True.

Although, I got to tell you - thanks to @lewis.heidrick, I had a full wave antenna on my C-7, and the quarter-wave antenna on the C-8, still gives better response times. So I’m suspecting there are some 800-series improvements also in play here.

[lewis.heidrick]

I think optimizing the power level for the antenna could make improvements as well.

[silverton38]

I noticed something similar.

[silverton38]

I do think the antenna is a big part of the positive results. I have noticed that Zigbee is performing about the same.

[lewis.heidrick]

Yea, glad to see the internals go in favor of externals. All the mods were really burning me out.

[Rxich]

@silverton38

Has Hubitat actually fixed Z-wave?

From reading the forum here, I wouldn't use the word fixed. I'd say the antenna on the C8 greatly helped things, but I'm still seeing people post ghost issues.
My perspective is that it probably improved, but time will tell if it's fixed, as HE has often said the issues are with the SDK and nothing they could do.

Just a few from a quick search:

Z wave routes disappear after update?

Not sure if this is normal or expected behavior but after doing the update today, most all of my zwave devices lost their routes when looking at the z wave details. Is this normal? I have a c8.

zwaveCrashed Often (Every hour or so)

Had this issue on a c-7 as well, upgraded to a c-8 for the better antennas (and already see the advantages after a couple of hours), but getting zwaveCrashed every hour or so (Not exact, but on the c-7 it was often at :00 or :30 minutes after the hour). When it happens, all the devices physically work but for 5-10 minutes the hub won't send or receive any messages from the z-wave network (so no automations work), and then it'll report zwaveCrashed, recover, then everything continues working. M…

C8 z-wave device and inclusion failures

My Zen16 migrated over to the C-8 without any problems. Since you are having problems I would try a factory reset on yours before you include.

C7 to C8 Migration Z-Wave Challenges

3 days ago I migrated from my C7 to the new C8. Migration was very straightforward and most everything worked. My challenge is only with Z-Wave devices. Although I have reliable usage, I went from nearly instant response to a consistent 3-5 sec delay for all z-wave devices. After hours of troubleshooting and forum searching I can't find anything in terms of what next steps to take. Could use some advice on what to look at next, below are screenshots of my z-wave details pages. Appreciate a…

[zcorneli.iit]

For what it's worth (My topic is the zwaveCrashed Often one), the migration was incredibly smooth, and it seems like my issue with zwave was likely a corrupted zwave database (Sadly, requiring a reset of the zwave radio, and re-pairing all my devices).

I'm about halfway through the re-pair process, and so far have had no crashes after the reset. That doesn't rule out one of my other devices being spammy or hosing the network, but it's promising.

On the ghost devices: I did have one ghost after migration (Maybe was there before migration), but removal worked perfectly fine in the C-8, I didn't need to use the z-stick to remove the ghost. Just refresh, wait for it to timeout, and then remove, and poof. A sign that maybe SiLabs has fixed the SDK for the 800 series chips.

[Rxich]

Great to hear it.

[tomsimbron]

Building off of this, what causes the ghosts to be undeletable? Is it the zwave chip series in the hub, or is it network related?

[jtp10181]

Usually they wont delete because for whatever reason the zwave chip is saying that when it pinged the node it replied back. Which often times is impossible because the device is ripped from the wall and gone. Next time I get one I am going to zniffer the traffic and see whats going on.

[rlithgow1]

@lewis.heidrick

Yea, glad to see the internals go in favor of externals. All the mods were really burning me out.

Well we're all appreciative of your efforts...

[rlithgow1]

This is confusion... People are seeing devices connected directly to the hub instead of hops and they're confused as to why, not realizing that this is preferred...

[zcorneli.iit]

Another update: after rebuilding my network (took several hours), I'm more 24 hours without a crash, and no ghosts to remove after 2 pairing failures. Seems like the new chip and sdk are a good improvement.

[rlithgow1]

I post your z-wave details page and let's see how it looks

[SuperDupe]

I have a somewhat different observation. Upon upgrading to the C8's from C7's, and letting the mesh settle in over a week, I actually feel like there is some degradation.

For example, with 110 Z-Wave devices that were connected directly to the C7, now about 30 are routing through other devices on the C8. Both hubs are in the same place... I had done the @lewis.heidrick mod on the C7's which caused almost all but one of my devices to connect directly to the C7.

The C8 for some reason feels the need to route through other devices...

That being said, I had yet another GE switch fail and had to replace it without the ability to un-pair... I will say the ghost left behind was easily removed by the C8.

[lewis.heidrick]

Did you try swapping back the antennas?

[vitaliy_kh]

My ZWave mesh on C8 seems to be healthy and stable but:

1. Most of the routing is done via two Aeothech Dimmers:
   

2. And 0x04 Dimmer is using 0x16 Dimmer as a router

3. There are two Ring V2 Extenders doing nothing but connected via Aeotech Dimmers:
   

   

To my eyes this makes absolutely no sense.

[silverton38]

I agree completely. Direct to device and not showing the routes, because there are none. This is a good thing.

[lcw731]

For some reason I still have a few devices that insist on multiple hops. One I understand, it's a Zooz Temp Humidity sensor in a gun safe. It has a lot to overcome. But at the same time, I have a Zooz Zen 17 that is in the garage (on the back side of the closet with the hub, just wallboard between them) about 10 feet from the hub, and it insists on 4 hops all over the house. But overall , I would say 98% of my Z Wave is now directly connected to the hub.

[jtp10181]

Mine is 100% Direct for the moment and all 100Kbps except 2 at 40K. Sometimes when I look 1-2 are showing hops.