Remotely power on computer

[JKnight (Keeping SmartThings limping along since 2013.)]

@Geewiz

garage door opener does little more than short the two power-line terminals

That is exactly what I was going to recommend:

Do you use ST to automate a garage door?

I guess I am old-school… scratch that, I know I am! For my dumb garage door opener, I just MacGyvered it. I used a smart outlet with a routine that turns it off after 2 seconds of being on (i.e. mimicking a momentary button press). I plugged in a 12v adapter to the smart outlet, and wired that up to a 12v automotive relay/switch. I hooked up the other end of the relay/switch to the button terminals on the opener. It works from my phone, Alexa, Google Assistant, and via a button on my watch or voice activated via Google Assistant on my watch or earbuds. Very convenient for opening the garage door when my hands are full… and it was cheep to make, as I had all the necessary parts just gathering dust. It has been working great and has been rock solid for at least 7 years now. This method m…