I am attempting to control my TV backlighting (Sylvania Smart+ lightstrip) using my Harmony activities as a trigger. I have the Harmony Companion remote/hub. My goal is to essentially have the TV backlighting on whenever the TV is ON (i.e. whenever a Harmony activity is active).
The SmartApp adds the Harmony activities to Smartthings as virtual switches, just like a light. So you can control Harmony activities via Smartthings or use the virtual switches as triggers. So that’s what I did: set up a routine that turns the backlighting ON when any activity switches ON, and backlighting OFF when the activity switches OFF.
The problem I am finding is that the virtual switches are slow to update states when controlled via Harmony. So I’ll turn ON an activity with my Harmony remote, and then it takes a minute or two before the virtual switch in Smartthings updates and triggers my TV backlighting. Same thing when turning OFF.
Any ideas to get the behavior I am looking for?
As a side note, I did attempt to control the backlighting using only the Harmony app (pulling in the backlight device from Smartthings). The problem I found with that is that Harmony sends the command “setLevel” to the device (viewed from Smartthings logs), which doesn’t actually turn on the backlighting. Maybe it is something with my specific Sylvania device, but ‘setLevel’ doesn’t work. Compared to when I have Harmony turn other lights on/off, it actually sends ‘on’ and ‘off’ commands. So maybe other Harmony users might have a solution for this.