this post was submitted on 01 Oct 2023
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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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If you can hard wire an ESP32 via Ethernet that would probably be best. You could also get better latency with an ESP32 over WiFi. However, a ZigBee button should be pretty low latency already.
Anecdotally I get perceptibly instant response from an ESP32 over WiFi.
Perceptibly instant is fast enough for me :)
What's the method you're using to communicate with HA?
Im guessing the latency here isnt zigbee, but the two cloud components that follow the button.