It's surprisingly easy and flexible. One can just buy a Zigbee dongle for 20$, connect it to the machine running Home Assistant, and have sensors, light bulbs a

It's surprisingly easy and flexible. One can just buy a Zigbee dongle for 20$, connect it to the machine running Home Assistant, and have sensors, light bulbs and such from many manufacturers working together via HA in no time. No need for smartphone apps, wifi or proprietary protocols that may stop working eventually. Even 5$ sensors and bulbs from Aliexpress were pretty much plug and play experience.