this post was submitted on 23 Jul 2024
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Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io
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This is so cool, first MQTT-based sensor I've set up. Already had a broker set up with HA, but how can HA automatically discover which topic to listen to, know the vendor name and how to interpret all the data?
There's a set of special topics under
homeassistant/
that devices also publish to that describe what each topic does and how HA should present it. HA will subscribe to everything under that root topic to discover all your MQTT devices.