Not able to translate MQTT state topic values in correct HASS light state. Probably due to templating

Configuration
,
1

Hi!

I can’t get HASS to properly detect if my dimmer lights are ON or OFF via MQTT.
I am pretty sure i am overlooking something really simple. I am new to MQTT, so excuse me for asking stupid questions :slight_smile:

I have just two MQTT topics:

  • /service/fhem/gw_keukenkoof/dim
  • /service/fhem/gw_keukenkoof/cmnd

Publishing any number between 1 and 100 to the /cmnd topic will switch ON my lights (value 1 being the darkest and 100 being the brightest). Publishing a 0 will switch OFF my lights.
The /dim topic just represents the actual status

I am able to set the right dim value via HASS, however I am not able to read it. Even detecting if the lights are ON or OFF is not working for me. So controlling the brightness outside (or on/off state) outside of HASS is not reflected in HASS.

Below is my yaml

light:
  - platform: mqtt
    name: "Keuken Koof Dimmer"
    state_topic: "/service/fhem/gw_keukenkoof/dim"
    state_value_template: "{{ 'OFF' if value == '0' else 'ON' }}"
    command_topic: "/service/fhem/gw_keukenkoof/cmnd"
    payload_off: "0"
    payload_on: "30"
    brightness_state_topic: "/service/fhem/gw_keukenkoof/dim"
    brightness_command_topic: "/service/fhem/gw_keukenkoof/cmnd"
    on_command_type: 'brightness'
    brightness_scale: 100

Any help in the right direction is appreciated.

2

Remove these two lines:

    payload_off: "0"
    payload_on: "30"

That will make the light use its default values which are OFF and ON.

3

Hi Taras.
Thanks for your reply.
That did a part of the trick!! Thanks. Almost there :slight_smile:
The only problem left now, is that when i turn the dimmer into its lowest position, HASS still publishes a “1”, which causes my dimmers not to go off entirely. The goal is to be able to publish a “0”.
Any idea how i can accomplish that?

Thanks,
marcel

4

OK, then remove state_value_template and add payload_on = 100 and payload_off = 0.

light:
  - platform: mqtt
    name: "Keuken Koof Dimmer"
    state_topic: "/service/fhem/gw_keukenkoof/dim"
    command_topic: "/service/fhem/gw_keukenkoof/cmnd"
    brightness_state_topic: "/service/fhem/gw_keukenkoof/dim"
    brightness_command_topic: "/service/fhem/gw_keukenkoof/cmnd"
    on_command_type: 'brightness'
    brightness_scale: 100
    payload_off: "0"
    payload_on: "100"
5

Thanks again Taras.
I fixed it differently. I defined a few additional topics and modified the Perl code on FHEM side.
Issue is resolved.

6

With all due respect, you have marked your post as the Solution but it reveals no details. That doesn’t help anyone else who may have a similar problem.

The community would appreciate it if you took a moment to show examples of what must be done to correct the problem.

7

Sure i can explain, but i am afraid it will be a little offtopic, as i solved it outside of HASS and inside of FHEM.

This is my current ligtht config (pretty standard):

  - platform: mqtt
    name: "Keukenkoof dimmer"
    state_topic: "/service/fhem/keukenkoof/state"
    command_topic: "/service/fhem/keukenkoof/cmnd"
    brightness_state_topic: "/service/fhem/keukenkoof/dim"
    brightness_command_topic: "/service/fhem/keukenkoof/dimcmnd"
    on_command_type: 'brightness'
    brightness_scale: 100
    payload_on: "on" 
    payload_off: "off"

As you can see I have 4 different topics.
One for the state_topic that takes care of on and off. The other takes care of the dimming value.
Originally, there were just two topics, taking care of both on/off and dimming value, which was causing issues in my config.

Perl code for FHEM SYS_MQTT device for on/off:

SYS_MQTT_KeukenKoof_cmnd:cmnd:.* {
    if ($EVENT =~ qr/.*?: (.*)/p) {
        my $cmnd = $1;
        Log3($NAME, 5, "executed mqtt command: " . $cmnd);
        fhem("set gw_keukenkoof ". $cmnd);
    }
}

Perl code for FHEM SYS_MQTT device for dimming:

SYS_MQTT_KeukenKoof_dimcmnd:cmnd:.* {
    if ($EVENT =~ qr/.*?: (.*)/p) {
        my $cmnd = $1;
        Log3($NAME, 5, "executed mqtt command: " . $cmnd);
        fhem("set gw_keukenkoof dim ". $cmnd);
    }
}
8

Hi,
i need a support on Mqtt Dimmer light which is having like single topic and different payloads for brightness.

topic=200
payload_off: C,6,0------>light=0ff
Payload_brightness-1: C,6,1----->light=10%
Payload_brightness-2: C,6,2----->light=25%
Payload_brightness-3: C,6,3----->light=35%
Payload_brightness-4: C,6,4----->light=50%
.
.
Payload_brightness-8: C,6,8----->light=100%

is it possible to create a single entity for this type of lights?

note: here Topic = 200 and payload format is:C,5,0 C,5,1…C,5,8