Good evening, I would like to integrate our conventional door bell into openHAB, to get a signal when the bell is rang and for example announce it via our Alexa devices. The bell is driven by a 12V circuit. The challenge with it is that power supply, button and bell are in three different places, …

Third time’s a charm, with the BTicino setup our doorbell finally got smart! [Installation open] Integration with openHAB is also already in place and the doorbell now triggers mobile push notifications as well as sound and voice notification via Sonos and the Echo Dots. I documented the whole s…

[image] the-ninth: any other solution Battery operated door sensor? [image] Make classic door bell smart? DIY In case it uses a magnet, you can also simply use a door contact sensor (one part of it). When the door bell rings and the magnetic field is e…

You can use Shelly i4DC for this. Works like a charm. Shelly 1 could also do the job. Both can be operated with 12VDC

One way to do this is with Zwave at the bell. Get a small 12V relay, and use a Zwave door window sensor that has a dry contact input. When the button is pushed there will be 12V across the bell which will trigger the relay. I have Ecolink sensors that work for this, but I don’t see the dry contac…

Is the power supply AC or DC? I thought most US doorbells are 12V AC.

I’ve been down this path only I think our doorbell was something weird like 7v, not 12v. In the end I got a Nest Hello. I ain’t got time for this! :smiley: If you do find a solution please post a tutorial.

here you go: [image] The device is a Shelly i3

[image] Oliver2: here you go: How does this work? L3 is output of the Shelly, in which case you’d make it stay on so the button and bell would work. But how does it sense that the button was pressed?

you didn’t see the updated diagram. Please have a look. And no L3 is not output - it is an input “I3” This is the vendor’s original schematic drawing: [scheme_DC]

I saw the original drawing, and thanks for clarifying I3 is input. Now I don’t understand how the bell would get powered from Shelly’s input

If the bell does not get 12VDC if the switch is closed then you need to unmount the bell, shorting the wires, and use a webaudio device (Android tablet).

openHAB Community

Looking for ideas on how to integrate door bell

Hardware DIY

sihui (SiHui) January 27, 2023, 9:06pm 2

Battery operated door sensor?