Hey there,
Today i orderd WS2812b for my rPI1 B+, 5m 60/m. I saw many tutorials, but most of them suggested this HDMI Splitter because it supports HDCP. But i dont need it. Currently im using my TV as a 3th PC Monitor, just to watch series and streams and stuff like that. So there is nothing that needs HDCP.
Now im wondering if its possible to use a passiv splitter like SYS HDMI Kabel Stecker Buchsen Y Splitter Kabel Adapter . I dont want to have so many power supplies behinde my TV. In the description it says it will only output to two screens if they have the exact same size, but in our case we are converting it to an AV signal to then convert it to USB. So im unsure if it will work.
I saw, that with the WS2812b i would need an Arduino to support it, or a level shifter. The Arduino would need a power supply so i would prefere the shifter here.
The last piece is the HDMI to AV Converter. I found something like HDMI GANA AV Unterstützung Schutzhülle but it needs power (of curse), now i thought that it should be possible to to charge it over the USB port from the rPI or am i wrong here?