Understanding MQTT: How Smart Home Devices Communicate

can you please update the mqtt information for home assistant. They have made some changes that i dont understand

Does a local nodered subscribe to topic on the cloud broker?
Provided that the local nodered is connected to the router

Can an MQTT client device subscribe to multiple topics? Seems this could be useful but your Node RED node properties imply this isn't possible?

Please, blink.

for some reason I feel you have a ponytail

As a newish parent. I'm so happy you used cleaning up your room as an example.

brilliant

That LWT function is pretty cool. We use that in telecom as well sometimes. They call it a "dying gasp" it's a little more direct than letting a server discover that a device is missing like the LWT does. It actually notices that device lost power and with what is left in the capacitors sends an alert to the management system. It's quicker, but if for some reason that message doesn't get sent the system will still notice the device hasn't checked in and sends a message similar to LWT. Something to the effect of "device went missing" or some such. Anyways not relevant to the topic I just thought LWT was worthy.

But how make rgb on

Great video - I can't believe it's taken me this long to find this one. Support this guy's patreon.

Fantastic explanation!!

Thanks for the video =)

I always thought MQTT was pronounced M-Cute

Super confusing.

you have nice and simple way of explaining things! Thank you.

I think my brain is about to blow up!

Great Content, Thanks for the good job.

Good video, the part that is most unknown to me is what you started to get into at the end. The MQTT naming and subscription/status. I would like if you had gone into more detail on the possible wildcards, use cases, etc. Perhaps a different video just expanding on that little bit further?