Shelly plug S via MQTT

Setup, Configuration and Use Beginners
1

HI all

I’m trying to get my shelly plug s to work via mqtt, I get it so far that the device publish data to mqtt broker but I fail on getting it into openhab. I prefer mqtt so I don’t have to set static IP:s to all devices, and i allready have a shelly 1 pro running via mqtt.

Heres is my thing configuration for generic mqtt thing.

UID: mqtt:topic:bc3e71556e:50fe53dd5a
label: Martinskänk
thingTypeUID: mqtt:topic
configuration: {}
bridgeUID: mqtt:broker:bc3e71556e
channels:
  - id: Relay0
    channelTypeUID: mqtt:switch
    label: Relay0
    description: null
    configuration:
      formatBeforePublish: '{"src":"MQTT0","method":"Switch.Set", "params":{"id":0,"on":%s}}'
      commandTopic: shellies/shellyplug-s-livigroom_south/relay/0/command,on="on",off="off"
      stateTopic: shellies/shellyplug-s-livigroom_south/relay/0, on="on",off="off"
2

What’s the problem you’re facing?

3

That doesn’t look like a sensible MQTT topic.
Have a look at some other examples.
Maybe more like just

shellies/shellyplug-s-livigroom_south/relay/0

although there is typo in livig/living perhaps

4

@Marcus_Carlsson I hooked up a couple of Nous A1’s (running Tasmota) to OH by looking up what MQTT strings arrive at OH and then built the generic MQTT thing-configuration around this. Am not a pro, but after some iteration it worked. :slight_smile:

Maybe what I came up with helps you for your exercise.

UID: mqtt:topic:7519737e0f:schaltstecker_tv
label: Schaltstecker TV
thingTypeUID: mqtt:topic
configuration: {}
bridgeUID: mqtt:broker:7519737e0f
location: Wohnzimmer
channels:
  - id: reachable
    channelTypeUID: mqtt:string
    label: Reachable
    description: null
    configuration:
      postCommand: false
      retained: false
      formatBeforePublish: "%s"
      stateTopic: tele/schaltstecker_tv/LWT
  - id: power
    channelTypeUID: mqtt:switch
    label: Power
    description: null
    configuration:
      commandTopic: cmnd/schaltstecker_tv/POWER
      postCommand: false
      retained: false
      formatBeforePublish: "%s"
      stateTopic: tele/schaltstecker_tv/STATE
      transformationPattern: JSONPATH:$.POWER
  - id: powerload
    channelTypeUID: mqtt:number
    label: Power load
    description: null
    configuration:
      postCommand: false
      retained: false
      step: 1
      formatBeforePublish: "%s"
      stateTopic: tele/schaltstecker_tv/SENSOR
      transformationPattern: JSONPATH:$.ENERGY.Power
  - id: voltage
    channelTypeUID: mqtt:number
    label: Line voltage
    description: null
    configuration:
      postCommand: false
      retained: false
      step: 1
      formatBeforePublish: "%s"
      stateTopic: tele/schaltstecker_tv/SENSOR
      transformationPattern: JSONPATH:$.ENERGY.Voltage
  - id: current
    channelTypeUID: mqtt:number
    label: Line current
    description: null
    configuration:
      postCommand: false
      retained: false
      step: 1
      formatBeforePublish: "%s"
      stateTopic: tele/schaltstecker_tv/SENSOR
      transformationPattern: JSONPATH:$.ENERGY.Current
  - id: totaltoday
    channelTypeUID: mqtt:number
    label: Total energy today
    description: null
    configuration:
      postCommand: false
      retained: false
      step: 1
      formatBeforePublish: "%s"
      stateTopic: tele/schaltstecker_tv/SENSOR
      transformationPattern: JSONPATH:$.ENERGY.Today
  - id: totalyest
    channelTypeUID: mqtt:number
    label: Total energy yesterday
    description: null
    configuration:
      postCommand: false
      retained: false
      step: 1
      formatBeforePublish: "%s"
      stateTopic: tele/schaltstecker_tv/SENSOR
      transformationPattern: JSONPATH:$.ENERGY.Yesterday
  - id: total
    channelTypeUID: mqtt:number
    label: Total energy
    description: null
    configuration:
      postCommand: false
      retained: false
      step: 1
      formatBeforePublish: "%s"
      stateTopic: tele/schaltstecker_tv/SENSOR
      transformationPattern: JSONPATH:$.ENERGY.Total
  - id: rssi
    channelTypeUID: mqtt:number
    label: WiFi Signal Strength
    description: null
    configuration:
      postCommand: false
      retained: false
      step: 1
      formatBeforePublish: "%s"
      stateTopic: tele/schaltstecker_tv/STATE
      transformationPattern: JSONPATH:$.Wifi.RSSI
  - id: totalstart
    channelTypeUID: mqtt:string
    label: Total since
    description: null
    configuration:
      postCommand: false
      retained: false
      formatBeforePublish: "%s"
      stateTopic: tele/schaltstecker_tv/SENSOR
      transformationPattern: JSONPATH:$.ENERGY.TotalStartTime
5

why do you need this “formatBeforePublish” part?
Also, on and off should be defined in separate lines of the configuration, like

    configuration:
      commandTopic: shellies/shellyplug-s-livigroom_south/relay/0/command
      stateTopic: shellies/shellyplug-s-livigroom_south/relay/0
      off: off
      on: on

rfu

6

Thanks for all hints I did just have a working example of a shell pro 1 module and tried to reverse that and that didn’t go well. No it seem like it works as supposed to. I just need to figure out how to make channles for energy and power, maybe also temperature.

Also the typoo was already made in configuration of shelly topic so in openhab it was correct.

image

7

And if somone stumbles across this i post my updated config, I used gui to create new channels because mu code wouldn’t get saved when typing into code page of generic mqtt thing.

UID: mqtt:topic:bc3e71556e:50fe53dd5a
label: Martinskänk
thingTypeUID: mqtt:topic
configuration: {}
bridgeUID: mqtt:broker:bc3e71556e
channels:
  - id: Relay0
    channelTypeUID: mqtt:switch
    label: Relay0
    description: null
    configuration:
      commandTopic: shellies/shellyplug-s-livigroom_south/relay/0/command
      stateTopic: shellies/shellyplug-s-livigroom_south/relay/0
      off: off
      on: on
  - id: PowerConsumption
    channelTypeUID: mqtt:number
    label: Powerconsumption
    description: ""
    configuration:
      stateTopic: shellies/shellyplug-s-livigroom_south/relay/0/power
      min: 0
  - id: Energyconsumption
    channelTypeUID: mqtt:number
    label: Energyconsumption
    description: ""
    configuration:
      stateTopic: shellies/shellyplug-s-livigroom_south/relay/0/energy
      min: 0