I've got my setup installed and working, with a few issues left to address My problem right now is that when I turn the TV off the video grabber is still receiving a signal from the Chromecast and the LEDs display whatever it has as the background image. I followed the No Soldering Tutorial amogst other sources around the web so my basic setup is largely the same Multiple sources (Chromecast, Laptop, Nintendo Switch, PS4) into an automatic HDMI Switch -> Powered HDMI splitter -> TV and Powered HDMI to RCA converter -> Raspberry Pi 3 -> WS2801 LED strip connected to the Pi on GPIO pins for Ground, Data and Clock/Signal, 5v and Ground connected to a 5v power supply. I have explored the idea of powering a component with the TV USB port but have encountered a few issues/thoughts: Chromecast - I like using the cast button and having the TV turn on with HDMI-CEC, this will not work if it is powered by the TV USB port Raspberry Pi - I don't want to just kill the power to the Pi HDMI Splitter - The lights stay on in their last state, they just go dimmer and surely this would kill the HDMI-CEC turn on signal also HDMI to RCA - The lights stay on in their last state, they just go dimmer I was also exploring the idea of mapping the TV remote power button to a script which would turn on/off Hyperion, however it now occurs to me that it may not work because I'm not using the Pi as an input at all; I don't have it plugged into one of the TV's HDMI and I never intend to use it as a media source (I have confirmed the remote does partially work when I was setting up OpenElec). Currently I am just pulling the power supply to the LEDs when not in use but I would like it to turn on and off automatically. If I did plug in the Pi to the TV with an HDMI cable and it was not on that AV Input would it still receive the signal from the power button and run the script to stop/start Hyperion? Is there anything in the HyperCon settings I can do to achieve the desired behaviour of turning the LEDs off with the TV? As a slight improvement to my current solution would I be able to use some sort of USB switch between the grabber and the Pi (Such as Example 1 or Example 2) or a DC switch between the LEDs and power supply Is there any other solution that I may be able to use? I'm aware that this is not neccessarily a sowtware issue but I'd prefferably like to come to a software solution. I can upload the hyperion config file later if needed as I don't I have access to it right now.