Looking for a simple smart home solution to use echo or google assistant to turn off my TV after some time has passed.
Example: “Assistant turn of TV in 30 minutes”.
Is there a way to do this so I don’t have to fumble around for my TV remote to navigate to the sleep timer settings anymore?
Great idea!! I have Roku TVs (TCL) and went to the Echo app to set it up only to remember that I had tried this before - killed a massive amount of time with zero success.
So I think I’ll just hang here for someone to pop in with the ‘I did it and this is how’…
Alexa and Google Assistant (to my knowledge) do not have delays built-in. Apple’s Shortcuts do, but you would need to expose your TV to HomeKit in order to accomplish that and then of course have an Apple device to act as a Hub as well (not likely as you highlighted Alexa/Assistant). So scratch that idea.
My general answer for home automation tends to be Home Assistant. I’m quiet partial to it 
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Assuming your TV integrates with Home Assistant (you could also integrate an IR blaster like Harmony or Broadlink) you could then setup a script in HA that could be triggered by Alexa or Assistant that has a delay in it before sending the call to turn off your TV.
@susandennis Roku is integrated as is what I use in my home.
Siri shortcuts can now send commands to Apple TV such as wake, sleep, and open an app. A shortcut could do this for you with a wait command then a sleep command. Also, many video apps will stop playing after a while. Like when Netflix infamously asks “Are you still watching?” I believe most streaming boxes will sleep without activity. That’s how my bedroom TV turns off… It’s more than 30 minutes though.