TL;DR Here’s a snippet for use in Home Assistant for turning an arbitrary target selector into a list of entity ids Also here’s a low-battery warning Blueprint that uses it. I’ve been using tykeal’s Low Battery blueprint (github) in my Home Assistant setup for some time, to give me an alert on any sensor batteries that need changing. There are a number of sensors marked “battery” that I don’t care to track (for example iPhone batteries), and the blueprint has a spot where you ca...
