I have a Z-Wave dimmer attached to my smartthings hub. I’ve successfully linked the ST hub and Harmony hub and vice-versa - they both see each other.
In the Harmony Android app, I can drill down to my dimmer and control it. It’s a bit laggy, but it works.
What I was really hoping to do, and half the reason I bought the ST Hub, is to control the dimmer with my Harmony remote. I was hoping to map the Channel up/down buttons for this purpose. However, when I try to map them in the Harmony app, the home automation devices don’t show up as options. It would be a step in the right direction if I could just turn the light on/off.
I believe the specific Harmony device I have is the “Smart Control” consisting of Remote N-R0005 and Hub O-R0004
This thread seems to suggest it’s possible, but doesn’t actually say how.