MQTT Doorbell

Share your Projects!
41

Looking at your layout I was wondering where the wemos D1 gets the power from? In the picture the wemos D1 is only connected by the reed switch. Is that correct?

Edit: I got it all working by powering the Wemos D1 via usb and play sound with Chromecast Audio when doorbell rings. Sweet! However I want the Chromecast to pause when doorbell rings and continue to play after that. Any tips how to automate this?

42

Sorry, indeed I missed where the wemos gets itā€™s power from. It is powered by USB.

I donā€™t have any ideas how to resume. But if you figure that out I would very much appreciate it when you could share that solution :grin:

43

I run mine off of an AC/DC adjustable buck controller. Voltage from the doorbell transformer(18VAC) goes into it and 5VDC comes out

44

@quadmasta what would you have used if you would have to step down from 230v to 3.3v?

To which pins did you connect, simple 5v and gnd??

45

This is what I used. It can adjust 2.7-27V AC or DC to 1.5-7VDC. Iā€™d be really shocked if your doorbell ran on mains power and didnā€™t have a transformer.
https://www.amazon.com/dp/B00SO4T7IU

46

yes valid remark, but I was asking it for another project :slight_smile: Which could run on 230 instead of usb.

47

I am new to this whole ESP8266 thing and I am curious as I am looking into a similar solution for our doorbell.

48

Hi Eric. I gave up the doorbell and stole adwolfers idea (magnet sensor). The signal was triggered by a surge in the power supply. This could be the relay or something else. I even tried octocoupler relay with seperate supply and some capacitors, but nothing helpedā€¦ But that beeing said. I started my experience with Arduino/ESP8266 using this code. So when I needed to make a magnet sensor code I easly put together a new code. Now I have a doorbell which alerts my and starts some automations, but I can not silence the bell. I am happy with my system and hope you find a solution too!

Cheers

49

Hereā€™s my doorbell project:
http://www.cribbstechnologies.com/index.php/home-automation/mqtt-integrated-doorbell/doorbell-hardware/

Iā€™m working on the updates to the project pages as I switched to WeMos stuff.

50

Hey, finished building this last night. Working well but I think there may have been a couple of false triggers.

Could be interference as mentioned below? Iā€™ll have another look tonight but I have some spare reed switches so tempted to try the @adwolters solution.

Thanks again :slight_smile:

51

I have also experienced some false triggers. Not sure how to fix it. Is it enough to use a shielded cable?

52

I implemented the design here: http://www.redgrendel.com/the-doorbell/
It is basically using a sonoff on the high voltage side to control the door bell.
It works well and I have HA sending me push notifications when the bell is rung with access to my camera to view who is at the door.
Only thing is I do get some false triggers which can be annoying.
Still trying to figure out what can be done about that.

after
after446Ɨ700 32.9 KB

1 Like
53

Do your false triggers actually ring the bell? Or just false notifications? Iā€™ve had two false triggers of the relay today which has rang the door bell. Confused everyone at home today haha

54

Triggers. It happens sometimes when i turn the lighting on in the bathroom. haha :see_no_evil:

I can see that the Wemos board send a MQTT message when this happens so i guess i should try using a shielded cable instead and see if this helps with anything.

55

Haha! I had to disconnect mine last night.

It triggered 5 times yesterday on itā€™s own.

Going to look at the magnet/reed solution next.

56

@christian.ek
Do you mind sharing your sonos_doorbell script?

Iā€™m trying to do the same as you with a different approach but getting errors with the scrip Iā€™m using.

57

Do you mean the automation? Here it is:

#################################################################
## Doorbell automation
#################################################################

- id: doorbell_ringing_daytime
  alias: Doorbell ringing daytime
  trigger:
    platform: mqtt
    topic: home/outdoors/doorbell
    payload: 'on'
  condition:
    condition: time
    after: '07:00:00'
    before: '19:00:00'
  action:
    - service: shell_command.sonos_play_doorbell
    - service: shell_command.doorbell_notification
    - service: notify.iOS
      data:
        message: "Dƶrrklockan ringer!"
        data:
          push:
            category: camera
          entity_id: camera.huvudentren

- id: doorbell_ringing_nighttime
  alias: Doorbell ringing nighttime
  trigger:
    platform: mqtt
    topic: home/outdoors/doorbell
    payload: 'on'
  condition:
    condition: time
    after: '19:00:00'
    before: '07:00:00'
  action:
    - service: shell_command.sonos_play_doorbell_night
    - service: shell_command.doorbell_notification
    - service: notify.iOS
      data:
        message: "Dƶrrklockan ringer!"
        data:
          push:
            category: camera
          entity_id: camera.huvudentren
2 Likes
58

Good to see that so many people want to automate their doorbell. I wanted to do the same but without interfering with the existing system.

In the first version I measured the voltage on the A0 pin of a Wemos but after reading an article in the German cā€™t magazine I created a version 2 with an optocoupler. Now itā€™s just a digital input on the Wemos board and the two circuits are nicely separated.

0
0894Ɨ530 81.1 KB

On the Wemos I used Homie software to connect to the MQTT and from there on itā€™s handled by Home Assistant. For now just a message to a slack bot but once you capture the signal in HA itā€™s up to you.

A detailed description of the setup is on my Github page.

5 Likes
59

How do you got telegram working. Mine failed

60

Did you ever work out the 8v problem?
My doorbell is 8v 0.6A too and would like to achieve the same.