Create Event from AVR Power On


I’m new to Home Assistant, so I might be looking at this the wrong way. That said, I want to create an Event that checks a condition and turns on my projector (via Harmony Hub) when certain conditions are met. My Marantz (Denon) receiver doesn’t seem to surface Power On events. FYI, my projector has no network interface.

BTW, I know I could easily accomplish this from the Harmony Hub. But, I want to avoid the Harmony Hub as a dependency. In other words, I want to be able to manually power on the receiver select a source and then have HA turn on the projector after sensing power on the receiver and a certain source selected.

Does anyone have any suggestions on how I might do this?