Integrate "old fashioned" doorbell into HA with Xiaomi

[jo-me (Jochen Mehlhorn)]

Cool
I did something very similar with the xiaomi button:

Alert me when my dumb doorbell rings

Fun topic! If I would get 1€ for everytime someone asks “What is it good for?” the system would have payed for itself already! I also use a Zigbee button from Xiaomi (~5€) which I opened to solder wires to the button base contacts. Then attached the wires to the dumb doorbell… so i thought. However, common doorbells (at least in Germany) use AC power (8-12V) for some reason. So I put a 12V AC relais in the circuit to accomodate for that. The outputs of that relay are then wired to the Xiaomi …

The doorbell circuit triggers a relay which triggers the slightly modified button.

Is your approach completely passive
(No soldering , fiddling with electricity, etc. )?

Cheer
Jochen