Mqtt light and json

Configuration
1

Hi!
still pretty new to HA, I hope, this question is not already answered (I could not find anything tough).
After successfully setting up some milights using mqtt, I am now trying to setup a more comlpex light (esp-rgbww from fhem) in HA.
But I am a little bit lost.
This controller wants to get a json message like this:

{
    "jsonrpc": "2.0",
    "method": "color",
    "params": {
        "t": 700,
        "d": "1",
        "cmd": "fade",
        "hsv": {
            "s": 55,
            "h": 0,
            "v": 0
        },
        "q": "single"
    }
}

where h, s and v are the most interesting parts of the story.
(To turn it off, v has to be 0, as there seems to be no off command).
Could please anyone give me a hint how to tell HA to send a json message like that while setting H, S and V correctly?
Best regards and thanks in advance,
Otto

2

I don’t know how you’ll be sending this (e.g. publishing the message yourself to your broker), but this would be the general pattern in a template:

{% set d = {"foo": "bar", "bas": -1} %}
{{ d | to_json }}

Depending how you’ll be using this, e.g. if you will have the same basic structure for different commands, and need to parameterise some keys, a Jinja macro would be useful.

3

thanks, but I do not understand a word :frowning:

4

First elaborate on this. Did you install an HA integration?

5

Damn. it was not milight, but homematic which is connected to fhem and communicating with HA using mqtt.
definition in HA:

  - name: "wz_panel_ofen"
    unique_id: wz_panel_ofen
    state_topic: "fhem/wz_panel_ofen/state"
    command_topic: "fhem/wz_panel_ofen/set/state"
    brightness_state_topic: "fhem/wz_panel_ofen/pct"
    brightness_command_topic: "fhem/wz_panel_ofen/set/pct"
    brightness_scale: 100
    on_command_type: "brightness"
    qos: 0
    payload_on: "on"
    payload_off: "off"
    optimistic: false

These are pretty simple commands, now I would like to integrate those more complicated LED controllers…
Best regards and thanks in advance,
Otto

6

Publish your JSON payload using the mqtt.publish service.

7

thanks, but I do not only want to publish - HA should recognize this as a light with RGB?

8

no one? :frowning: