MQTT Light Template - Help needed

Configuration
1

I’ve modified my desk lamp with a wemos d1 mini running tasmota to make it “smart”. Since I need to toggle the physical button on my lamp, I use the tasmota “relay1” with “PulseTime 1”. The actual relay hence is always powered off. I have an analog read (ADC0) to see whether my lamp is currently turned on/off (since I can also use the original switch on it)

Now all I need to do is configure a light in Home Assistant that sends a Toggle command to tasmota when being turned on/off but that uses the analog read from my tasmota device as a state_template (>100 it’s turned on, <100 it’s turned off)

I read through the docs and also looked at a few examples, but I’m really not sure how to make this work. I could also extract the state as a sensor and then make it work but I would like not to go that route if not necessary.

2

I tried the following config:

light:
  - platform: mqtt
    schema: template
    name: Tischlampe
    command_topic: "cmnd/Tischlampe/POWER1"
    state_topic: "tele/Tischlampe/SENSOR"
    state_value_template: >
        {% if {{ value_json.ANALOG }} >= 100 %}
          on
        {% elif {{ value_json.ANALOG }} < 100 %}
          off
        {% endif %}
    availability_topic: "tele/Tischlampe/LWT"
    qos: 1
    payload_on: "ON"
    payload_off: "ON"
    payload_available: "Online"
    payload_not_available: "Offline"
    retain: false

I get the following error:

invalid config for [light.mqtt]: [state_value_template] is an invalid option for [light.mqtt]. Check: light.mqtt->state_value_template. (See ?, line ?).

3

Litlte progress, I need to use the default schema, not template. Also I forgot to remove the ‘{{’ and ‘}}’ for the json object:

light:
  - platform: mqtt
    name: Tischlampe
    command_topic: "cmnd/Tischlampe/POWER1"
    state_topic: "tele/Tischlampe/SENSOR"
    state_value_template: >
        {% if value_json.ANALOG >= 100 %}
          on
        {% elif value_json.ANALOG < 100 %}
          off
        {% endif %}
    availability_topic: "tele/Tischlampe/LWT"
    qos: 1
    payload_on: "ON"
    payload_off: "ON"
    payload_available: "Online"
    payload_not_available: "Offline"
    retain: false

Now I only need to test and see if it works.

4

The device is shown as “unavailable”

5

My device needs to send it’s tele data in order for HA to receive them.
So I added the rule that sends an tele update whenever my analog read changes more than 10%:

{"Rule3":"ON","Once":"OFF","StopOnError":"OFF","Length":54,"Free":457,"Rules":"ON ANALOG#A0div10 DO publish tele/%topic%/SENSOR ENDON"}

It kind of works, but for whatever reason the message that is published is empty:

17:22:21 RUL: ANALOG#A0DIV10 performs "publish tele/Tischlampe/SENSOR"
17:22:21 MQT: tele/Tischlampe/SENSOR =

Any ideas?

6

Getting closer:

I also need to publish a value:

Rule3 ON ANALOG#A0DIV10 DO publish tele/Tischlampe/SENSOR %value% ENDON

This publishes the outcome of A0DIV10, which is 0 for off and roughly above 60 for me when on.

7

I edited my rule:

Rule3 ON ANALOG#A0DIV10 DO publish tele/Tischlampe/SENSOR {"ANALOG":{"A0": %value%}} ENDON

and also my configuration.yaml:

light:
  - platform: mqtt
    name: Tischlampe
    command_topic: "cmnd/Tischlampe/POWER1"
    state_topic: "tele/Tischlampe/SENSOR"
    state_value_template: >
        {% if value_json.ANALOG.A0 >= 50 %}
          on
        {% elif value_json.ANALOG.A0 < 50 %}
          off
        {% endif %}
    availability_topic: "tele/Tischlampe/LWT"
    qos: 1
    payload_on: "ON"
    payload_off: "ON"
    payload_available: "Online"
    payload_not_available: "Offline"
    retain: false

But the light still does not show the correct on/off values (just shows as off). I’ll try adding a sensor now if no one else has another idea.

8

Got it working, switch to schema template:

light:
  - platform: mqtt
    schema: template
    name: Tischlampe
    command_topic: "cmnd/Tischlampe/POWER1"
    state_topic: "tele/Tischlampe/SENSOR"
    state_template: >
        {% if value_json.ANALOG.A0 >= 50 %}
          on
        {% elif value_json.ANALOG.A0 < 50 %}
          off
        {% endif %}
    availability_topic: "tele/Tischlampe/LWT"
    qos: 1
    command_on_template: "ON"
    command_off_template: "ON"
    payload_available: "Online"
    payload_not_available: "Offline"
    retain: false