My Chromecast turns on and off with my TV. It uses USB power from the TV for this to work.
I would like something similar from my Raspberry Pi 4 but as the power requirements of the Pi 4 are more than my TV's USB port can provide, is there another way I can do this? Is there a "wake on USB" function or some sort of project/board I could make/buy that could switch the Pi on and off whenever the TV is on/off?
Like I mentioned, the Chromecast does this by being connected to the USB port on the TV so I imagine I could use a USB port on the TV to signal the Pi (or some other device powering the Pi) to switch on.