Although the harmony servers are still active, I realise that relying on an online source for control of my multimedia system is not a good long term plan.
I have already been using blasters, a esp32 ir receiver, HA integrations for media hardware and universal ir remotes in a scripted potential replacement. Generally, I am OK with doing this other option other than the pain of making the cheap remote buttons represent meaningful functions.
However, I still feel it would be better if I could still use my existing Harmony Companion remote, which is the smoothest universal remote I have ever used. Also, the short press/long press functionality is super useful. A RF receiver could capture these.
I know that others have suggested that getting the rf values is incredibly difficult as the frequency use is shown as proprietary. Surely, at some point, given Logitech have little interest in supporting these remotes, they will have released the frequencies somewhere?
If they have, does anyone actually have these frequencies and/or button values?
To my knowledge (and after extensive looking) Logitech has not released the RF values. I tried for quite some time to sniff the comms between the remote and the base station, but it is, as you have said, damn near impossible.
I’ve moved on to a DIY ESPHome based remote, but I still have two of those base stations and non-LED screen remotes. They really are my favorite. I keep hoping Logitech will at least turn off the constant firmware checking that means the hubs have to connect to Logitech now and then. Then at least someone might be able to hack the hub. Next up would be the wish that Logitech would sell or opensource the remote database so others could use it.
What a great find. I don’t know what internet search foo I lack, but in all my hunting I never found that. I ordered some of the radio components and grabbed an ESP32 board I had laying around and got it all working today. That Harmony companion remote is still probably one of the best remotes I’ve ever used, and I’m pretty stoked to be able to use it again. I have two of them (and the hubs) laying around, so if one fails I still have another.
I forked the repo and created a code file that will create a device in HA with a sensor for key presses that makes it a bit easier to integrate into HA. I’m going to see about writing up some instructions tomorrow.