I did a write up on how I tied in my standard wired doorbell with Home Assistant. I spent a lot of time researching how I could splice into the low voltage doorbell circuit when it dawned on me how I could probably use the electromagnet inside for more than just ringing the chime!
http://brentsaltzman.com/make-your-doorbell-smart/
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That’s thinkin with your noodle.
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A simple solution without over engineering it!
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Ok, I love this. Thanks for sharing!