What is it? Optical Audio Output for Raspberry Pi (1A+/1B+/2B/3B/3B+/4B/Zero) (1A/1B could be connected with cables but it doesn't fit directly) Hardware can also be modified to an optical input o...Read More…
Most TVs can't forward DolbyDigital/DTS 5.1 streams from HDMI to the optical output or HDMI ARC. (They can only output 5.1 streams which are generated by the TV and 5.1 streams which come over HDMI are always converted to a 2.0 stream.)
So I wanted to have a optical output for my RaspberryPi media center (OpenElec/LibreElec) to get the 5.1 stream directly to my 5.1 surround system. (Buying a audio extractor which extracts the audio signal from HDMI would have been also a possibility but most of them cost more than 50USD and there are often problems with HDMI CEC if you use this.)
If you want to try it with Raspbian or any other distro just search the internet - there are lots of tutorials available for the HifiBerry Digi or PiFy modules (which all use the same drivers).
Warning: Some distributions (for example OpenElec) have an old Kernel which has a Bug in the Pi3 Bluetooth driver and prevents all audio modules from working - in this case Bluetooth must be disabled with an additional overlay file or the Kernel must be upgraded (LibreElec for example already has a newer Kernel and this problem is fixed). This problem is only present on Pi3 and also the same with all other HifiBerry/PyFy modules.
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