this post was submitted on 25 Feb 2026
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Home Assistant

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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...

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HomeKey with ESPHome is working! (old.reddit.com)
submitted 14 hours ago by bot@lemmit.online to c/homeassistant@lemmit.online
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The original was posted on /r/homeassistant by /u/LightBrightLeftRight on 2026-02-25 14:33:53+00:00.

For any ESPHome tinkerers out there, the unofficial ESPHome library to use HomeKey with a PN532 NFC reader is working! Thanks rednblkx!

I've really wanted to set up HomeKey readers in my house to disarm the alarm and to open my garage. Tried this library last year, but it was too finnicky for actual use so my prototype boards have been collecting dust. With the recent update to the crypto library it works like a charm now!

I really hope that we see some open source projects with this! Right now I'm just planning to 3d print a case to put the reader on top of an S3 box as an entry reader.

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