Every morning (or afternoon), when we turn on our espresso machine, we quite frankly forget to turn it off, sometimes for hours on end. Eventually, it’s heating element will die (if we keep being so clumsy) and I’d like to solve my problem with an Automation.

The tools at my disposal:

iHome iSP6X Smart Plug (named “Coffee Maker” in my example)
HomeKit

I have an automation in mind that should be simple, but seems so difficult to accomplish...

When I turn on “Coffee Maker” (whether I use my Apple Watch, iPhone, or the manual switch on the Smart Plug), I want it to turn off automatically after 5 minutes.

I’ve tried creating Scenes that include the Coffee Maker in it (called “Coffee”), then an automation that is triggered by “Coffee Maker” being on, to set the Scene “Coffee” and to automatically turn off after 5 minutes. This never worked.

Then I tried converting my Automation to a Shortcut, and using the Wait 300 seconds function. That also never worked (I understand the limitations of the “wait” function (specifically that it is “broken” for my purposes), especially when in the background...).

So what are my options for my Automation/Shortcut?

I’d like to stress that I do not want to set up HomeBridge - I figure this should be solvable using the tools at my disposal.

Thanks for your help in advance!