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new post: automating security camera notifications with home assistant and ntfy
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---
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title: "Automating Security Camera Notifications With Home Assistant and Ntfy"
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date: 2023-11-25
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# lastmod: 2023-11-23
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description: "Using the power of Home Assistant automations and Ntfy push notifications to level-up security camera motion detections."
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featured: true
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toc: true
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comment: true
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thumbnail: thumbnail.png
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series: Projects
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tags:
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- api
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- automation
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- homeassistant
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---
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A couple of months ago, I [wrote about](/easy-push-notifications-with-ntfy) how I was using a self-hosted instance of [ntfy](https://ntfy.sh) to help streamline notification pushes from a variety of sources. I closed that post with a quick look at how I had [integrated ntfy into my Home Assistant setup](/easy-push-notifications-with-ntfy/#home-assistant) for some basic notifications.
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I've now used that immense power to enhance the notifications I get from the [Reolink security cameras](https://reolink.com/us/product/rlk16-820d8-a/) scattered around my house. I selected Reolink cameras specifically because I knew it was supported by Home Assistant, and for the on-device animal/person/vehicle detection which allowed for a bit of extra control over which types of motion events would trigger a notification or other action. I've been very happy with this choice, but I have found that the Reolink app itself can be a bit clunky:
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- The app lets you send notifications on a schedule (I only want notifications from the indoor cameras during work hours when no one is home), but doesn't make it easy to override that schedule (like when it's a holiday and we're all at home anyway).
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- Push notifications don't include an image capture so when I receive a notification about a person in my backyard I have to open the app, go select the correct camera, select the Playback option, and scrub back and forth until I see whatever my camera saw.
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I figured I could combine the excellent [Reolink integration for Home Assistant](https://www.home-assistant.io/integrations/reolink) with Home Assistant's powerful Automation platform and ntfy to get more informative notifications and more flexible alert schedules. Here's the route I took.
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### Alert on motion detection
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{{% notice note "Ntfy Integration" %}}
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Since manually configuring ntfy in Home Assistant via the [RESTful Notifications integration](easy-push-notifications-with-ntfy/#notify-configuration), I found that a [ntfy-specific integration](https://github.com/ivanmihov/homeassistant-ntfy.sh) was available through the [Home Assistant Community Store](https://hacs.xyz/) addon. That setup is a bit more flexible so I've switched my setup to use it instead:
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```yaml
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# configuration.yaml
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notify:
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- name: ntfy
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platform: rest # [tl! --:8 collapse:8]
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method: POST_JSON
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headers:
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Authorization: !secret ntfy_token
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data:
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topic: home_assistant
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title_param_name: title
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message_param_name: message
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resource: ! secret ntfy_url
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platform: ntfy # [tl! ++:3]
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url: !secret ntfy_url
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token: !secret ntfy_token
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topic: home_assistant
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```
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{{% /notice %}}
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The Reolink integration exposes a number of entities for each camera. For triggering a notification on motion detection, I'll be interested in the [binary sensor](https://www.home-assistant.io/integrations/binary_sensor/) entities named like `binary_sensor.$location_$type` (like `binary_sensor.backyard_person` and `binary_sensor.driveway_vehicle`), the state of which will transition from `off` to `on` when the selected motion type is detected.
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So I'll craft start with a simple automation which will push out a notification whenever any of the listed cameras detect a person (or vehicle):
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```yaml
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# torchlight! {"lineNumbers": true}
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# exterior_motion.yaml
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alias: Exterior Motion Alerts
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description: ""
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trigger:
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- platform: state
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entity_id:
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- binary_sensor.backyard_person
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- binary_sensor.driveway_person
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- binary_sensor.driveway_vehicle
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- binary_sensor.east_side_front_person
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- binary_sensor.east_side_rear_person
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- binary_sensor.west_side_person
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from: "off"
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to: "on"
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condition: []
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action:
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- service: notify.ntfy
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data:
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title: Motion detected!
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message: "{{ trigger.to_state.attributes.friendly_name }}"
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```
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{{% notice tip "Templating" %}}
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That last line is taking advantage of Jinja templating and [trigger variables](https://www.home-assistant.io/docs/automation/templating/#state) so that the resulting notification displays the friendly name of whichever `binary_sensor` triggered the automation run. This way, I'll see something like "Backyard Person" instead of the entity ID listed earlier.
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{{% /notice %}}
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I'll step outside and see if it works...
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### Capture a snapshot
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Each Reolink camera also exposes a `camera.$location_sub` entity which represents the video stream from the connected camera. I can add another action to the notification so that it will grab a snapshot, but I'll also need a way to match the `camera` entity to the correct `binary_sensor` entity. I can do that by adding a variable set to the bottom of the automation:
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```yaml
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# torchlight! {"lineNumbers": true}
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# exterior_motion.yaml [tl! focus]
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alias: Exterior Motion Alerts
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description: ""
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trigger: # [tl! collapse:start]
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- platform: state
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entity_id:
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- binary_sensor.backyard_person
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- binary_sensor.driveway_person
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- binary_sensor.driveway_vehicle
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- binary_sensor.east_side_front_person
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- binary_sensor.east_side_rear_person
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- binary_sensor.west_side_person
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from: "off"
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to: "on" # [tl! collapse:end]
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condition: []
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action:
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- service: camera.snapshot # [tl! ++:start focus:start]
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target:
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entity_id: "{{ cameras[trigger.to_state.entity_id] }}"
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data:
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filename: /media/snaps/motion.jpg # [tl! ++:end focus:end]
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- service: notify.ntfy
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data:
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title: Motion detected!
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message: "{{ trigger.to_state.attributes.friendly_name }}"
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variables: # [tl! ++:start focus:start]
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cameras:
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binary_sensor.backyard_person: camera.backyard_sub
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binary_sensor.driveway_person: camera.driveway_sub
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binary_sensor.driveway_vehicle: camera.driveway_sub
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binary_sensor.east_side_front_person: camera.east_side_front_sub
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binary_sensor.east_side_rear_person: camera.east_side_rear_sub
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binary_sensor.west_side_person: camera.west_side_sub # [tl! ++:end focus:end]
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```
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That `"{{ cameras[trigger.to_state.entity_id] }}"` template will look up the ID of the triggering `binary_sensor` and return the appropriate `camera` entity, and that will use the [`camera.snapshot` service](https://www.home-assistant.io/integrations/camera/#service-snapshot) to save a snapshot to the desginated location (`/media/snaps/motion.jpg`).
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Before this will actually work, though, I need to reconfigure Home Assistant to allow access to the storage location, and I should also go ahead and pre-create the folder so there aren't any access issues.
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```yaml
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# configuration.yaml
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homeassistant:
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allowlist_external_dirs:
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- "/media/snaps/"
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```
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I'm using the [Home Assistant Operating System virtual appliance](https://www.home-assistant.io/installation/alternative#install-home-assistant-operating-system), so `/media` is already symlinked to `/root/media` inside the Home Assistant installation directory. So I'll just log into that shell and create the `snaps` subdirectory:
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```shell
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mkdir -p /media/snaps # [tl! .cmd_root]
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```
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Rather than walking outside each time I want to test this, I'll just use the Home Assistant Developer Tools to manually toggle the state of the `binary_sensor.backyard_person` entity to `on`, and I should then be able to see the snapshot in the Media interface:
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Woo, look at me making progress!
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### Attach the snapshot
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Now that I've captured the snap, I need to figure out how to attach it to the notification. Ntfy [supports inline image attachments](https://docs.ntfy.sh/publish/#attach-local-file), which is handy, but it expects those to be delivered via HTTP `PUT` action. Neither my original HTTP `POST` approach or the Ntfy integration support this currently, so I had to use the [`shell_command` integration](https://www.home-assistant.io/integrations/shell_command/) to make the call directly.
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I can't use the handy `!secret` expansion inside of the shell command, though, so I'll need a workaround to avoid sticking sensitive details directly in my `configuration.yaml`. I can use a dummy sensor to hold the value, and then use the `{{ states('sensor.$sensor_name') }}` template to retrieve it.
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So here we go:
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```yaml
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# configuration.yaml [tl! focus:start]
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# dummy sensor to make ntfy secrets available to template engine
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template:
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- sensor:
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- name: ntfy_token
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state: !secret ntfy_token # [tl! highlight]
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- name: ntfy_url
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state: !secret ntfy_url # [tl! highlight focus:end]
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notify:
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- name: ntfy
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platform: ntfy
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url: !secret ntfy_url
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token: !secret ntfy_token
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topic: home_assistant
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# [tl! highlight:10,1]
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shell_command: # [tl! focus:9 highlight:6,1]
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ntfy_put: >
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curl
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--header 'Title: {{ title }}'
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--header 'Priority: {{ priority }}'
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--header 'Filename: {{ filename }}'
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--header 'Authorization: Bearer {{ states('sensor.ntfy_token') }}'
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--upload-file '{{ file }}'
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--header 'Message: {{ message }}'
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--url '{{ states('sensor.ntfy_url') }}/home_assistant'
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```
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Now I just need to replace the service call in the automation with the new `shell_command.ntfy_put` one:
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```yaml
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# torchlight! {"lineNumbers": true}
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# exterior_motion.yaml # [tl! focus]
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alias: Exterior Motion Alerts
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description: ""
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trigger: # [tl! collapse:start]
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- platform: state
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entity_id:
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- binary_sensor.backyard_person
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- binary_sensor.driveway_person
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- binary_sensor.driveway_vehicle
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- binary_sensor.east_side_front_person
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- binary_sensor.east_side_rear_person
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- binary_sensor.west_side_person
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from: "off"
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to: "on" # [tl! collapse:end]
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condition: []
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action:
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- service: camera.snapshot
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target:
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entity_id: "{{ cameras[trigger.to_state.entity_id] }}"
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data:
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filename: /media/snaps/motion.jpg
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- service: notify.ntfy # [tl! --:start focus:start]
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data:
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title: Motion detected!
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message: "{{ trigger.to_state.attributes.friendly_name }}" # [tl! --:end]
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- service: shell_command.ntfy_put # [tl! ++:start reindex(-4)]
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data:
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title: Motion detected!
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message: "{{ trigger.to_state.attributes.friendly_name }}"
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file: /media/snaps/motion.jpg # [tl! ++:end focus:end]
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variables: # [tl! collapse:start]
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cameras:
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binary_sensor.backyard_person: camera.backyard_sub
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binary_sensor.driveway_person: camera.driveway_sub
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binary_sensor.driveway_vehicle: camera.driveway_sub
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binary_sensor.east_side_front_person: camera.east_side_front_sub
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binary_sensor.east_side_rear_person: camera.east_side_rear_sub
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binary_sensor.west_side_person: camera.west_side_sub # [tl! collapse:end]
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```
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Now when I wander outside...
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Well that guy seems sus - but hey, it worked!
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### Backoff rate limit
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Of course, I'll also continue to get notified about that creeper in the backyard about every 15-20 seconds or so. That's not quite what I want. The _easy_ way to prevent an automation from firing constantly would be to [insert a `delay`](https://www.home-assistant.io/docs/scripts/#wait-for-time-to-pass-delay) action, but that would be a global delay rather than per-camera. I don't necessarily need to know every time the weirdo in the backyard moves, but I would like to know if he moves around to the side yard or driveway. So I needed something more flexible than an automation-wide delay.
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Instead, I'll create a 5-minute [`timer`](https://www.home-assistant.io/integrations/timer/) for each camera by simply adding this to my `configuration.yaml`:
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```yaml
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# configuration.yaml
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timer:
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backyard_person:
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duration: "00:05:00"
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driveway_person:
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duration: "00:05:00"
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driveway_vehicle:
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duration: "00:05:00"
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east_front_person:
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duration: "00:05:00"
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east_rear_person:
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duration: "00:05:00"
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west_person:
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duration: "00:05:00"
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```
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Back in the automation, I'll add a new `timers` variable set which will help to map the `binary_sensor` to the corresponding `timer` object. I can then append an action to start the timer, and a condition so that the automation will only fire if the timer for a given camera is not currently running. I'll also set the automation's `mode` to `single` (so that it will only run once at a time), and set the `max_exceeded` value to `silent` (so that multiple triggers won't raise any errors).
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```yaml
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# torchlight! {"lineNumbers": true}
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# exterior_motion.yaml # [tl! focus]
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alias: Exterior Motion Alerts
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description: ""
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trigger: # [tl! collapse:start]
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- platform: state
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entity_id:
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- binary_sensor.backyard_person
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- binary_sensor.driveway_person
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- binary_sensor.driveway_vehicle
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- binary_sensor.east_side_front_person
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- binary_sensor.east_side_rear_person
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- binary_sensor.west_side_person
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from: "off"
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to: "on" # [tl! collapse:end]
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condition: [] # [tl! focus:3 --]
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condition: # [tl! ++:2 reindex(-1)]
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- condition: template
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value_template: "{{ is_state(timers[trigger.to_state.entity_id], 'idle') }}"
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action:
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- service: camera.snapshot
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target:
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entity_id: "{{ cameras[trigger.to_state.entity_id] }}"
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data:
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filename: /media/snaps/motion.jpg
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- service: notify.ntfy
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data:
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title: Motion detected!
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message: "{{ trigger.to_state.attributes.friendly_name }}"
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- service: shell_command.ntfy_put
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data:
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title: Motion detected!
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message: "{{ trigger.to_state.attributes.friendly_name }}"
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file: /media/snaps/motion.jpg
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- service: timer.start # [tl! focus:2 ++:2]
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target:
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entity_id: "{{ timers[trigger.to_state.entity_id] }}"
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mode: single # [tl! focus:1 ++:1]
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max_exceeded: silent
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variables:
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cameras: # [tl! collapse:start]
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binary_sensor.backyard_person: camera.backyard_sub
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binary_sensor.driveway_person: camera.driveway_sub
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binary_sensor.driveway_vehicle: camera.driveway_sub
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binary_sensor.east_side_front_person: camera.east_side_front_sub
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binary_sensor.east_side_rear_person: camera.east_side_rear_sub
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binary_sensor.west_side_person: camera.west_side_sub # [tl! collapse:end]
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timers: # [tl! ++:start focus:start]
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binary_sensor.backyard_person: timer.backyard_person
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binary_sensor.driveway_person: timer.driveway_person
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binary_sensor.driveway_vehicle: timer.driveway_vehicle
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binary_sensor.east_side_front_person: timer.east_front_person
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binary_sensor.east_side_rear_person: timer.east_rear_person
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binary_sensor.west_side_person: timer.west_person# [tl! ++:end focus:end]
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```
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That pretty much takes care of my needs for exterior motion alerts, and should keep me informed if someone is poking around my house (or, more frequently, making a delivery).
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||||
### Managing interior alerts
|
||||
I've got a few interior cameras which I'd like to monitor too, so I'll start by just copying the exterior automation and updating the entity IDs:
|
||||
```yaml
|
||||
# torchlight! {"lineNumbers": true}
|
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# interior_motion.yaml
|
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alias: Interior Motion Alerts
|
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description: ""
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trigger:
|
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- platform: state
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entity_id:
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- binary_sensor.kitchen_back_door_person
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- binary_sensor.garage_person
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- binary_sensor.garage_vehicle
|
||||
- binary_sensor.study_entryway_person
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from: "off"
|
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to: "on"
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condition:
|
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- condition: template
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value_template: "{{ is_state(timers[trigger.to_state.entity_id], 'idle') }}"
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action:
|
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- service: camera.snapshot
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target:
|
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entity_id: "{{ cameras[trigger.to_state.entity_id] }}"
|
||||
data:
|
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filename: /media/snaps/motion.jpg
|
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- service: shell_command.ntfy_put
|
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data:
|
||||
title: Motion detected!
|
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message: "{{ trigger.to_state.attributes.friendly_name }}"
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file: /media/snaps/motion.jpg
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- service: timer.start
|
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target:
|
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entity_id: "{{ timers[trigger.to_state.entity_id] }}"
|
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max_exceeded: silent
|
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mode: single
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variables:
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cameras:
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binary_sensor.kitchen_back_door_person: camera.kitchen_back_door_sub
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binary_sensor.study_entryway_person: camera.study_entryway_sub
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binary_sensor.garage_person: camera.garage_sub
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binary_sensor.garage_vehicle: camera.garage_sub
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timers:
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binary_sensor.kitchen_back_door_person: timer.kitchen_person
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binary_sensor.study_entryway_person: timer.study_person
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binary_sensor.garage_person: timer.garage_person
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binary_sensor.garage_vehicle: timer.garage_vehicle
|
||||
```
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|
||||
But I don't typically want to get alerted by these cameras if my wife or I are home and awake. So I'll use the [local calendar integration](https://www.home-assistant.io/integrations/local_calendar) to create a schedule for when the interior cameras should be active. Once that integration is enabled and the entity `calendar.interior_camera_schedule` created, I can navigate to the Calendar section of my Home Assistant interface to create the recurring calendar events (with the summary "On"). I'll basically be enabling notifications while we're sleeping and while we're at work, but disabling notifications while we're expected to be at home.
|
||||
|
||||
|
||||
|
||||
So then I'll just add another condition so that the automation will only fire during those calendar events:
|
||||
```yaml
|
||||
# torchlight! {"lineNumbers": true}
|
||||
# interior_motion.yaml [tl! focus]
|
||||
alias: Interior Motion Alerts
|
||||
description: ""
|
||||
trigger: # [tl! collapse:start]
|
||||
- platform: state
|
||||
entity_id:
|
||||
- binary_sensor.kitchen_back_door_person
|
||||
- binary_sensor.garage_person
|
||||
- binary_sensor.garage_vehicle
|
||||
- binary_sensor.study_entryway_person
|
||||
from: "off"
|
||||
to: "on" # [tl! collapse:end]
|
||||
condition:
|
||||
- condition: template
|
||||
value_template: "{{ is_state(timers[trigger.to_state.entity_id], 'idle') }}"
|
||||
- condition: state # [tl! focus:2 ++:2]
|
||||
entity_id: calendar.interior_camera_schedule
|
||||
state: "on"
|
||||
action: # [tl! collapse:start]
|
||||
- service: camera.snapshot
|
||||
target:
|
||||
entity_id: "{{ cameras[trigger.to_state.entity_id] }}"
|
||||
data:
|
||||
filename: /media/snaps/motion.jpg
|
||||
- service: shell_command.ntfy_put
|
||||
data:
|
||||
title: Motion detected!
|
||||
message: "{{ trigger.to_state.attributes.friendly_name }}"
|
||||
file: /media/snaps/motion.jpg
|
||||
- service: timer.start
|
||||
target:
|
||||
entity_id: "{{ timers[trigger.to_state.entity_id] }}" # [tl! collapse:end]
|
||||
max_exceeded: silent
|
||||
mode: single
|
||||
variables: # [tl! collapse:start]
|
||||
cameras:
|
||||
binary_sensor.kitchen_back_door_person: camera.kitchen_back_door_sub
|
||||
binary_sensor.study_entryway_person: camera.study_entryway_sub
|
||||
binary_sensor.garage_person: camera.garage_sub
|
||||
binary_sensor.garage_vehicle: camera.garage_sub
|
||||
timers:
|
||||
binary_sensor.kitchen_back_door_person: timer.kitchen_person
|
||||
binary_sensor.study_entryway_person: timer.study_person
|
||||
binary_sensor.garage_person: timer.garage_person
|
||||
binary_sensor.garage_vehicle: timer.garage_vehicle # [tl! collapse:end]
|
||||
```
|
||||
|
||||
I'd also like to ensure that the interior motion alerts are also activated whenever our [Abode](https://goabode.com/) security system is set to "Away", regardless of what time that may be. That will make the condition a little bit trickier: alerts should be pushed if the timer isn't running AND the schedule is active OR the security system is armed. So here's what that will look like:
|
||||
|
||||
```yaml
|
||||
# torchlight! {"lineNumbers": true}
|
||||
# interior_motion.yaml [tl! focus]
|
||||
alias: Interior Motion Alerts
|
||||
description: ""
|
||||
trigger: # [tl! collapse:start]
|
||||
- platform: state
|
||||
entity_id:
|
||||
- binary_sensor.kitchen_back_door_person
|
||||
- binary_sensor.garage_person
|
||||
- binary_sensor.garage_vehicle
|
||||
- binary_sensor.study_entryway_person
|
||||
from: "off"
|
||||
to: "on" # [tl! collapse:end]
|
||||
condition: # [tl! focus:start]
|
||||
- condition: and # [tl! ++:1]
|
||||
conditions: # [tl! collapse:5]
|
||||
- condition: template # [tl! --:4]
|
||||
value_template: "{{ is_state(timers[trigger.to_state.entity_id], 'idle') }}"
|
||||
- condition: state
|
||||
entity_id: calendar.interior_camera_schedule
|
||||
state: "on"
|
||||
- condition: template # [tl! ++:start reindex(-5)]
|
||||
value_template: "{{ is_state(timers[trigger.to_state.entity_id], 'idle') }}"
|
||||
- condition: or
|
||||
conditions:
|
||||
- condition: state
|
||||
entity_id: calendar.interior_camera_schedule
|
||||
state: "on"
|
||||
- condition: state
|
||||
state: armed_away
|
||||
entity_id: alarm_control_panel.abode_alarm # [tl! ++:end focus:end]
|
||||
action: # [tl! collapse:start]
|
||||
- service: camera.snapshot
|
||||
target:
|
||||
entity_id: "{{ cameras[trigger.to_state.entity_id] }}"
|
||||
data:
|
||||
filename: /media/snaps/motion.jpg
|
||||
- service: shell_command.ntfy_put
|
||||
data:
|
||||
title: Motion detected!
|
||||
message: "{{ trigger.to_state.attributes.friendly_name }}"
|
||||
file: /media/snaps/motion.jpg
|
||||
- service: timer.start
|
||||
target:
|
||||
entity_id: "{{ timers[trigger.to_state.entity_id] }}" # [tl! collapse:end]
|
||||
max_exceeded: silent
|
||||
mode: single
|
||||
variables: # [tl! collapse:start]
|
||||
cameras:
|
||||
binary_sensor.kitchen_back_door_person: camera.kitchen_back_door_sub
|
||||
binary_sensor.study_entryway_person: camera.study_entryway_sub
|
||||
binary_sensor.garage_person: camera.garage_sub
|
||||
binary_sensor.garage_vehicle: camera.garage_sub
|
||||
timers:
|
||||
binary_sensor.kitchen_back_door_person: timer.kitchen_person
|
||||
binary_sensor.study_entryway_person: timer.study_person
|
||||
binary_sensor.garage_person: timer.garage_person
|
||||
binary_sensor.garage_vehicle: timer.garage_vehicle # [tl! collapse:end]
|
||||
```
|
||||
|
||||
### Snooze or disable alerts
|
||||
We've got a lawn service that comes pretty regularly to take care of things, and I don't want to get constant alerts while they're doing things in the yard. Or maybe we stay up a little late one night and don't want to get pinged with interior alerts during that time. So I created a script to snooze all motion alerts for 30 minutes, simply by temporarily disabling the automations I just created:
|
||||
|
||||
```yaml
|
||||
# torchlight! {"lineNumbers": true}
|
||||
# snooze_motion_alerts.yaml
|
||||
alias: Snooze Motion Alerts
|
||||
sequence:
|
||||
- service: automation.turn_off
|
||||
data:
|
||||
stop_actions: true
|
||||
target:
|
||||
entity_id:
|
||||
- automation.exterior_motion_alerts
|
||||
- automation.interior_motion_alerts
|
||||
- service: notify.ntfy
|
||||
data:
|
||||
title: Motion Snooze
|
||||
message: Camera motion alerts are disabled for 30 minutes.
|
||||
- delay:
|
||||
hours: 0
|
||||
minutes: 30
|
||||
seconds: 0
|
||||
milliseconds: 0
|
||||
- service: automation.turn_on
|
||||
data: {}
|
||||
target:
|
||||
entity_id:
|
||||
- automation.interior_motion_alerts
|
||||
- automation.exterior_motion_alerts
|
||||
- service: notify.ntfy
|
||||
data:
|
||||
title: Motion Resume
|
||||
message: Camera motion alerts are resumed.
|
||||
mode: single
|
||||
icon: mdi:alarm-snooze
|
||||
```
|
||||
|
||||
I can then add that script to the camera dashboard in Home Assistant or pin it to the home controls on my Android phone for easy access.
|
||||
|
||||
I'll also create another script for manually toggling interior alerts for when we're home at an odd time:
|
||||
```yaml
|
||||
# torchlight! {"lineNumbers": true}
|
||||
# toggle_interior_alerts.yaml
|
||||
alias: Toggle Indoor Camera Alerts
|
||||
sequence:
|
||||
- service: automation.toggle
|
||||
data: {}
|
||||
target:
|
||||
entity_id: automation.interior_motion_alerts
|
||||
- service: notify.ntfy
|
||||
data:
|
||||
title: "Interior Camera Alerts "
|
||||
message: "Alerts are {{ states('automation.interior_motion_alerts') }} "
|
||||
mode: single
|
||||
icon: mdi:cctv
|
||||
```
|
||||
|
||||
### That's a wrap
|
||||
This was a fun little project which had me digging a bit deeper into Home Assistant than I had previously ventured, and I'm really happy with how things turned out. I definitely learned a ton in the process. I might explore [adding action buttons to the notifications](https://community.home-assistant.io/t/ntfy-sh-with-actions/578603) to directly snooze alerts that way, but that will have to wait a bit as I'm out of tinkering time for now.
|
||||
|
||||
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