@will, I understand the “no-neutral” problem. I had a few of those myself which is why I also ended up with Lutron Caseta for some switches. But I really do like the Caseta system… very fast and the switches are nice looking… but anyways…
Yeah that diagram shows how things mesh out…
I’m curious about the Leviton requirement… Are the LED lights battery operated? Anyways, that’s another topic. However according to the specs the Leviton is z-wave plus and does support security.
Great script if you are using hass for your z-wave. I’m not so it doesn’t have the z-wave info.
I looked into the line but I didn’t like the physical switch look. I wish Lutron had released a simpler dimmer, more inline with their Maestro dimmer. I’ve always liked Lutron dimmers and it sounds like Caseta is much more reliable than z-wave.
The LED lights are hardwired to a transformer in the basement. Other dimmers, like my GE ones, caused a high-pitched sound so I had to use a ELV dimmer. The only z-wave ELV dimmer I could find was the Leviton.
Pi’s are pretty easy to ignore. Have you thought about moving it upstairs where it is a bit closer to your devices? At least to test it out.
That is a good suggestion - however, I’m not using a Pi, I’m running HA in a VM on a very large and heavy server (it has 19 hard drives and is huge).
However, I actually don’t think location is the issue; I believe it is software based. So I ended up going back to pairing my z-wave devices with the Z-stick directly and everything is in HA and it works great with no dead nodes. I tried pairing securely and regularly within HA and I kept getting dead nodes and instability.
I’m not sure why pairing directly with HA would cause an issue, perhaps it is because when you pair with the Z-stick HA can’t probe for features each time - maybe this checking for features can causes nodes to be reported dead or perhaps my nodes are still dying but HA just can’t read the status when it is paired through the z-stick.
But everything appears to be working and the response rate is very fast so I’m going to keep it as is and wait and see.
As a side note, I think the Z-stick supports network keys, if you use the backup software for the z-stick you can enable and set a key. I didn’t test this out though and I read on a domoticz forum that someone couldn’t get it to work. So for now I’m fine with having a stable network and non-secure communication for my light switches.
You just have to get more creative with a larger server. Creative decorating and convincing any significant other you have that it is a coffee table/recirculating fan is the key 
It’s my space heater…
In my old office reception area, I had two huge 7 U server cases lying on their sides with a glass table top. Everyone loved it.
If I already have devices paired, can I add a network key to my config or do I have to repair my devices again.
My understanding is, as long as the devices were paired unsecurely, you can add/change your network key and it shouldn’t affect your unsecured paired devices.
Thanks.
I actually successfully added a network key and secured device and its all working fine.