I understand that fixing HDMI ARC communication on the LG/Wiim side can be complicated. That's why I propose this solution, because the prioretization of input detection on hdmi/optical is missing.
Now I connected two signals hdmi + optical and use this script for automatic switching signal...
1. Wiim Amp connected via HDMI to HDMI3 (ARC) in TV
2. Sound out to HDMI ARC
3. eARC disabled and digital sound output to PCM.
4. In Wiim app output to TV
5. I don't have audio. Reboot tv/wiim is not solving problem. Soundbar Creative works fine with this settings.
This feature is only for detecting audio from hdmi or optical in, everything else is without changes.
This issue solve the problem when you connect HDMI and Optical in the same time.
Issue:
Many people report an issue with HDMI ARC on LG TVs.
e.g:
https://forum.wiimhome.com/threads/hdmi-arc-not-working-on-lg-oled-65b46la.4195/
https://forum.wiimhome.com/threads/lg-oled-b4-hdmi-arc-does-not-work.4260/
https://forum.wiimhome.com/threads/hdmi-arc-and-lg-smarttv-problem.5549/...
You can try connect optical and hdmi. Optical for audio and hdmi for volume control, for me works (LG B4 55inch). The one thing is, wiim boot on source “TV”, not “Optical”.
But HDMI ARC should work without any additional combinations...
@WiiM Support maybe you can introduce separate options for "Auto-sensing of Optical In" and "Auto-sensing of HDMI"? This could eliminate the need for my automatic switching script.
I have LG B4 and I have the same problem - no sound on ARC. But volume control via hdmi is working, I can control Wiim Amp by Apple Tv or Lg remote.
My actual solution is connect hdmi and optical to wiim. Hdmi is for volume control, optical for audio. This configuration generate one problem: on...
You can build some DIY board using ESP32 and IR Receiver.
Apple TV Remote -> ESP32+IR -> Wiim API via WIFI
https://www.wiimhome.com/pdf/HTTP%20API%20for%20WiiM%20Mini.pdf
(2.3.11 Set volume + 2.3.1 Get the playback status)
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