I see mentions of MQTT ocassionally. | Home Assistant | Page 1

sharp pulsar Feb 23, 2024, 7:07 PM

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A well known and widely supported protocol that can be used by almost anything - from little ESPs and the likes on up

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Also wonderfully decoupled, your ESP can be on the far side of the planet from HA

jovial plinth Feb 23, 2024, 7:09 PM

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I described it as a group chat for devices to my family.

flint jungle Feb 23, 2024, 7:15 PM

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That’s a good analogy

naive finch Feb 23, 2024, 10:10 PM

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I meant how does it fit in with HA? I have a sonoff S31 flashed to esphome and a Shelly temp+humidity sensor so far.

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Does mqtt allow devices to pub/sub to queues to talk to each other or is it to get data into HA?

flint jungle Feb 23, 2024, 10:13 PM

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It holds the devices state so that ha can read and control it

naive finch Feb 23, 2024, 10:13 PM

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Because right now I'd really like to get 10, 100hz, or 1khz(theoretical limit of sensor)sampling out of the S31. But I don't know what HA uses for history, and that's a lot of data. Probably should be an external influxDB server

flint jungle Feb 23, 2024, 10:14 PM

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Why do you need that many updates?

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Even on the assembly lines I manage, we don’t go below 10hz because there’s no net gain.

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Especially for a temperature sensor.

naive finch Feb 23, 2024, 10:30 PM

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Temp no, but voltages/amps yes- if you're looking for transients

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If It can be processed before being broadcast I will

flint jungle Feb 24, 2024, 9:45 AM

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You should because HA is not designed for that level of updates.

#I see mentions of MQTT ocassionally.