MQTT light with json state topic not working payload_on

Configuration
1

hi
actually i try to setup new MQTT light but i have some problems.
This setup as a switch is running:

switch:
  - platform: mqtt
    name: Licht Garage
    state_topic: "stat/garage/RESULT"
    value_template: "{{value_json.S29cmnd_D0.STATE }}"
    payload_on: "ON"
    payload_off: 'OFF'
    state_on: "ON"
    state_off: "OFF"
    command_topic: "cmnd/garage/Sensor29"
    payload_on: "0, ON"
    payload_off: "0, OFF"

but if i set it up as light the state is noch changing. when i switch on the light the button jumps back to off. how can i fix it?
this code is not running, how can i read the state?

light:
  - platform: mqtt
    name: Licht Garage
    state_topic: "stat/garage/RESULT"
    value_template: "{{value_json.S29cmnd_D0.STATE }}"
    payload_on: "ON"
    payload_off: 'OFF'
    # state_on: "ON"
    # state_off: "OFF"
    command_topic: "cmnd/garage/Sensor29"
    payload_on: "0, ON"
    payload_off: "0, OFF"
2

Check the documentation for the MQTT Light, value_template is not a valid option for an MQTT Light. Also you have two times payload_on, payload_off, one of them will be ignored, don’t know which one.

You need a state_value_template in the MQTT light, try like this:

light:
  - platform: mqtt
    name: Licht Garage
    state_topic: "stat/garage/RESULT"
    state_value_template: "{{value_json.S29cmnd_D0.STATE }}"
    payload_on: 'ON'
    payload_off: 'OFF'
    command_topic: "cmnd/garage/Sensor29"
3

hi @Burningstone
thanks for you answer. the problem is that i need the payload in den command_topic like this “1, ON” that means Pin no. 1 ON.
if i set it up as an switch (like at the beginning of this thread) it is working
so this is not working:

light:
  - platform: mqtt
    name: Licht Garage test
    state_topic: "stat/testtest/RESULT"
    state_value_template: "{{value_json.S29cmnd_D1.STATE }}"
    payload_on: 'ON'
    payload_off: 'OFF'
    command_topic: "cmnd/testtest/Sensor29"

this code is working but with out the state of the switch. if i switch on the light the button jumps back to OFF

light:
  - platform: mqtt
    name: Licht Garage test
    state_topic: "stat/testtest/RESULT"
    state_value_template: "{{value_json.S29cmnd_D1.STATE }}"
    payload_on: '1, ON'
    payload_off: '1, OFF'
    command_topic: "cmnd/testtest/Sensor29"

in MQTT Explorer i get this message

state_topic: "stat/testtest/RESULT"
{
  "S29cmnd_D1": {
    "COMMAND": "ON",
    "STATE": "ON"
  }
 }
4

Sorry I don’t understand,
What do you need to publish to which topic to turn on/off the light?

5

@Burningstone
to turn on and off i need to publish the following commands

command_topic: "cmnd/testtest/Sensor29"
payload_on: '1, ON'
payload_off: '1, OFF'

and then the State is published like the following:

{
  "S29cmnd_D1": {
    "COMMAND": "ON",
    "STATE": "ON"
  }
 }
6

Ah oke, then try this:

light:
  - platform: mqtt
    name: Licht Garage test
    state_topic: "stat/testtest/RESULT"
    state_value_template: "1, {{value_json.S29cmnd_D1.STATE }}"
    payload_on: "1, ON"
    payload_off: "1, OFF"
    command_topic: "cmnd/testtest/Sensor29"
1 Like
7

@Burningstone
perfect!!! thanks

now the code looks like this. i m using an MCP23017 with an Wemos D1 mini to control 8 Relay and 6 Inputs.

light:
  - platform: mqtt
    name: Licht Garage
    state_topic: "stat/garage/RESULT"
    state_value_template: "0, {{value_json.S29cmnd_D0.STATE }}"
    payload_on: "0, ON"
    payload_off: "0, OFF"
    command_topic: "cmnd/garage/Sensor29"
  - platform: mqtt
    name: Licht Garagenweg
    state_topic: "stat/garage/RESULT"
    state_value_template: "1, {{value_json.S29cmnd_D1.STATE }}"
    payload_on: "1, ON"
    payload_off: "1, OFF"
    command_topic: "cmnd/garage/Sensor29"
  - platform: mqtt
    name: Output3
    state_topic: "stat/garage/RESULT"
    state_value_template: "Pin2, {{value_json.S29cmnd_D2.STATE }}"
    payload_on: "Pin2, ON"
    payload_off: "Pin2, OFF"
    command_topic: "cmnd/garage/Sensor29"
    and so on...................... Pin 0 to Pin 15
1 Like