[glazura37]

I've put a bunch of rPI zeroes throughout the house with varying degrees of success. Works best with the home assistant beacon on my Galaxy watch, it's likely tile tags will work better. The only downside is that the PIs require an external Bluetooth dongle hooked with a USB extender, because of wifi interference.

I used raspberry so I can use room-assistant for home assistant. You could probably hack it up with a bunch of ESPs and a central server to aggregate it all. Then trilateration should be fairly simple.