I got most of this project working. I’m sure there are a few bugs, but I’ll have to leave that for another time. In the meantime, a mostly working Travel Time with Google Maps and Street View:
First you’ll need to set up the Google Travel Time and Calendar components. In addition to the instructions on the component page, you should enable the Google Street View API.
The next part is to add some sensors:
- platform: google_travel_time
api_key: YOUR_GOOGLE_API_HERE
origin: zone.home
destination: sensor.new_cal_location
options:
arrival_time: sensor.cal_start_time
- platform: template
sensors:
cal_title:
value_template: '{{ states.calendar.jeremy.attributes.message }}'
friendly_name: 'Title'
cal_location:
value_template: '{{ states.calendar.jeremy.attributes.location }}'
friendly_name: 'Location'
new_cal_location:
value_template: '{% if is_state("sensor.cal_location", "None") %}{{ zone.work }}{% else %}{{ states.calendar.jeremy.attributes.location }}{% endif %}'
friendly_name: 'Location'
cal_start_time:
value_template: '{{ states.calendar.jeremy.attributes.start_time }}'
friendly_name: 'Start Time'
calc_leave_time:
value_template: '{{ (as_timestamp(states.calendar.jeremy.attributes.start_time) - states.sensor.google_travel_time__driving.attributes.duration.split(" ")[0] | int *60 ) | timestamp_custom("%Y-%m-%d %H:%M") }}'
friendly_name: 'Leave Time'
unit_of_measurement: 'time'
sys_time:
value_template: '{{ (now().strftime("%s") | int | timestamp_custom("%Y-%m-%d %H:%M")) }}'
unit_of_measurement: 'time'
I tried playing with the above to handle the errors when there is either no calendar item or no location in one to look up zone.work. I have to test this more, as it wasn’t quite functioning. Maybe someone can help there.
Next, add some input_boolean’s to toggle the notification options:
input_boolean:
announce_time_to_leave:
name: Announce over Living Room Sonos
initial: on
icon: mdi:speaker-wireless
display_time_to_leave:
name: Display with Persistent Notification
initial: on
icon: mdi:cards-variant
Now comes the automation part. I have one for the voice announcement to my Living Room Sonos and the other as a persistent notification:
- alias: 'Announce Calendar Leave time'
trigger:
platform: time
minutes: '/1'
seconds: 0
condition:
condition: and
conditions:
- condition: template
value_template: '{{ states.sensor.sys_time.state == states.sensor.calc_leave_time.state }}'
- condition: state
entity_id: input_boolean.announce_time_to_leave
state: 'on'
action:
- service: media_player.sonos_snapshot
data_template:
entity_id: "media_player.living_room"
- service: tts.google_say
data_template:
entity_id: "media_player.living_room"
message: 'Excuse me. It is now time to leave for {{ states.calendar.jeremy.attributes.message }} It will take you {{ states.sensor.google_travel_time__driving.attributes.duration }} travel time.'
- delay: '00:00:{{ states.media_player.living_room.attributes.media_duration | int }}'
- service: media_player.sonos_restore
data_template:
entity_id: "media_player.living_room"
- alias: 'Display Calendar Leave time'
trigger:
platform: time
minutes: '/1'
seconds: 0
condition:
condition: and
conditions:
- condition: template
value_template: '{{ states.sensor.sys_time.state == states.sensor.calc_leave_time.state }}'
- condition: state
entity_id: input_boolean.display_time_to_leave
state: 'on'
action:
service: persistent_notification.create
data:
message: 'It is now time to leave for {{ states.calendar.jeremy.attributes.message }} It will take you {{ states.sensor.google_travel_time__driving.attributes.duration }} travel time.'
title: "Calendar Event"
Now add some cameras to display the google maps and street view. Don’t forget to add your API Key:
camera:
- platform: generic
name: Destination
still_image_url: https://maps.googleapis.com/maps/api/staticmap?center={{states.calendar.jeremy.attributes.location}}&zoom=17&size=600x300&maptype=roadmap&markers=color:blue
limit_refetch_to_url_change: true
- platform: generic
name: Street View
still_image_url: https://maps.googleapis.com/maps/api/streetview?size=600x300&location={{states.calendar.jeremy.attributes.location}}&key=YOUR_API_KEY
limit_refetch_to_url_change: true
Finally, add some groups. I used the customize section as well (optional):
calendar_view:
view: yes
name: Calendar
entities:
- group.next_appointment
- camera.street_view
- camera.destination
next_appointment:
view: no
name: Next Appointment
entities:
- sensor.cal_title
- sensor.cal_location
- sensor.cal_start_time
- sensor.google_travel_time__driving
- input_boolean.announce_time_to_leave
- input_boolean.display_time_to_leave
And that’s it! 
