Remote Building Door Entry System Help

Hardware
1

Hi All,
I am trying to figure out how to get my building intercom remotely controlled.
I have a Comelit 6750W

I have a raspberry pi zero and a relay board hat. Initially i would love to

  • Get a notification if my door bell is rang
  • Remotely be able to open it
    This would be controlled by my home assistant (separate raspberry pi setup already running)

I have no experience in electronics so a bit clueless where to start, looked up for wiring diagrams but found only building wiring and not the set wiring. This is how it looks from inside.

Thanks for any help in advance :pray:

2

Maybe you can find something easier, like using a switchbot to click on open button? And a sound detection for ringing??? Just thinking loud.

3

Looks like there are various manuals available to users of that device. Start by looking at that.

4

Haha, that’s a clever hack. i will keep it as last resort. Thanks !

5

I tried going though every in. the link but they are mostly about building wiring

6

Any news to your project?

I have the same intercom installed and tried a switchbot. Switchbot doesn’t work (pressure is too low).

7

So someone on github has a well described project for a similar intercom, decoding simplebus2 protocol

I am still collecting all parts to give it a spin

The other solution is with switchbot (i have an alternative one from aliexpress) the pressure is not an issue but the capacitive touch keys are not possible todo without some hacks (https://www.reddit.com/r/switchbot/comments/mh61wr/add_a_capacitive_stylus_tip_to_switchbot_appendage/)

8

So went with the switch bot for now
added a coin cell battery (3V) and connect a wire with copper tape which i grounded in the intercom itsefl

9

Oh wow, this is interesting.
Could you help post a closed-up photo (or photos) to show the coin battery & copper tape setup?

(Or… is there some other blog or video or webpage we could refer to?)

10

Maybe this post could be interesting for you: