I’ve got an Aeon Power Meter (two actually, across different circuits in my house). I can see them both reporting “instantaneous power” as the values change - what’s the best way to “export” that data to a third party?
I’m trying now to “pull” the data using the HASS Rest API; but having no luck there, and I’m also not much for Polling if I don’t have to. Is there a way in HASS to detect the ZWave :“state change” and then make a REST call with the state values?
I guess it would depend on how the third party is capable of receiving data. Using an automation you could:
publish the data to an MQTT topic and the 3rd party would subscribe the same topic.
post the data using a REST command using the 3rd party’s REST API.
Right - my app has a REST API; but, when I need help with is getting the HASS scripting right so that when the ZWave sensor changes state (new value), HASS makes the correct call - detecting the state change and putting the values in the REST call
I don’t have all the details of your environment so this example is rudimentary and will require tailoring to suit your specific needs.
Begin by defining a rest_command that will post data to the 3rd party. Obviously you’ll have to modify it (minimally, the url and payload).
rest_command:
report_power_level:
url: https://third-party.com
method: POST
headers:
accept: 'application/json, text/html'
payload: '{"power_level": "{{ power }}"}}'
content_type: 'application/json; charset=utf-8'
You should test it to ensure it works before proceeding to create an automation. Go to Home Assistant’s States page, select the rest_command you just created, enter some sample data like:
{"power_level": "your data goes here"}
and run it.
Create an automation that is triggered by the zwave sensor’s state-changes. Its action calls your rest_command and passes it the value of the sensor’s power-related attribute. I assume it’s in an attribute and not in the sensor’s state.
automation:
- alias: 'send to 3rd party'
trigger:
platform: state
entity_id: sensor.some_zwave_sensor
action:
- service: rest_command.report_power_level
data_template:
power: "{{ trigger.to_state.attributes['your_power_attribute'] }}"
Like I said, this is a rough outline. If you provide me with specific details about your sensor and the 3rd party we can work together to customize this solution.
What do you have so far? I do something vaguely similar but with Slack; when I arrive at home/work I update my slack status and add an icon; when I am playing a game on my PlayStation I update my status with the game.
I use the RESTful command component (as shown above) to make the API call to Slack, so I would get that working first. You can then make an automation that is triggered when the state changes from your sensor. This is the bit I am not sure about as I don’t know how to trigger something more simple that I have done myself. Here is my automation;
- id: 'Set_Slack_Status_To_Current_Game'
alias: 'Set Slack Status To Current Game'
trigger:
platform: state
entity_id: media_player.playstation_4
from: 'idle'
to: 'playing'
action:
- service: rest_command.slack_status_set_from_ps4
And then the rest command;
slack_status_set_from_ps4:
url: 'https://slack.com/api/users.profile.set'
method: POST
headers:
content-type: application/json
authorization: !secret slack_token
payload: '{"profile":{"first_name":"Luke","last_name":"Brunning","email":"[email protected]","status_text":"playing {{states.media_player.playstation_4.attributes.source}}","status_emoji":":joystick:"}}'
I would focus on getting the RESTful command working first; you can create that and then trigger it manually from the services section in HA and then at least you aren’t trying to get two things working at once.