Smart Laundry Notifications with a Sonoff S31 & Home Assistant

Make your Laundry Smarter with our favorite smart plug, the Sonoff S31, and Home Assistant with Voice Notifications when the Washer and/or Dryer are finished.  Easy power monitoring and automations with this step by step tutorial of the setup.

Sonoff S31

Soldering Iron Station
Helping Hands(as shown)
Better Helping Hands
0.015 Solder
Female Jumper Wires
USB FTDI for Flashing

Tasmota Backlog (modify to your values)
backlog ssid MyWiFiz; password SooperSekret; mqtthost 192.168.1.5; mqttuser me123; mqttpassword 123that; powerretain 1; topic SNF-Washer; sensorretain 1; poweronstate 1; friendlyname SNF-Washer; teleperiod 60

Home Assistant Config Sample & Automations:

(configuration.yaml)
 sensor:

  - platform: mqtt

    name: "Dryer State"

    state_topic: "hass/state/dryer"

    icon: mdi:tumble-dryer

  - platform: mqtt
    name: "Washer State"
    state_topic: "hass/state/washer"
    icon: mdi:washing-machine
  - platform: mqtt
    name: "Washer Watts"
    state_topic: "tele/SNF-Washer/SENSOR"
    value_template: "{{value_json['ENERGY'].Power }}"
    qos: 2
    unit_of_measurement : "W"
    icon: mdi:flash-circle
    availability_topic: "tele/SNF-Washer/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
  - platform: mqtt
    name: "Washer Voltage"
    state_topic: "tele/SNF-Washer/SENSOR"
    value_template: "{{value_json['ENERGY'].Voltage }}"
    qos: 2
    unit_of_measurement : "V"
    icon: mdi:flash-circle
    availability_topic: "tele/SNF-Washer/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
  - platform: mqtt
    name: "Washer Amps"
    state_topic: "tele/SNF-Washer/SENSOR"
    value_template: "{{value_json['ENERGY'].Current }}"
    qos: 2
    unit_of_measurement : "A"
    icon: mdi:flash-circle
    availability_topic: "tele/SNF-Washer/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
  - platform: mqtt
    name: "Washer Energy Today"
    state_topic: "tele/SNF-Washer/SENSOR"
    value_template: "{{value_json['ENERGY'].Today }}"
    qos: 2
    unit_of_measurement : "kWh"
    availability_topic: "tele/SNF-Washer/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
  - platform: mqtt
    name: "Washer Energy Yesterday"
    state_topic: "tele/SNF-Washer/SENSOR"
    value_template: "{{value_json['ENERGY'].Yesterday }}"
    qos: 2
    unit_of_measurement : "kWh"
    availability_topic: "tele/SNF-Washer/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"

  - platform: mqtt
    state_topic: "tele/SNF-Washer/STATE"
    name: "Washer Signal"
    unit_of_measurement: "%"
    value_template: "{{value_json['Wifi'].RSSI }}"
    availability_topic: "tele/SNF-Washer/LWT"
    qos: 1
    payload_available: "Online"
    payload_not_available: "Offline"

(group.yaml)

  washerpanel:
    name: Washer
    entities:
      - sensor.washer_state
      - sensor.washer_voltage
      - sensor.washer_watts
      - sensor.washer_amps
      - sensor.washer_energy_today
      - sensor.washer_energy_yesterday
      - sensor.washer_signal

(automations.yaml)

- alias: 'Dryer State - Door'
  trigger:
    platform: numeric_state
    entity_id: sensor.dryer_watts
    above: 7
    below: 20
    for:
      seconds: 2
  action:
    - service: mqtt.publish
      data:
        topic: hass/state/dryer
        payload: 'Door Open'
        retain: 'true'
- alias: 'Dryer State - Drying'
  trigger:
    platform: numeric_state
    entity_id: sensor.dryer_watts
    above: 50
    for:
      seconds: 2
  action:
    - service: mqtt.publish
      data:
        topic: hass/state/dryer
        payload: 'Drying'
        retain: 'true'
- alias: 'Dryer State - Idle'
  trigger:
    platform: numeric_state
    entity_id: sensor.dryer_watts
    below: 6
    for:
      seconds: 2
  action:
    - service: mqtt.publish
      data:
        topic: hass/state/dryer
        payload: 'Idle'
        retain: 'true'
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#  Washing Machine Start/Finish
# -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
- alias: 'Washer State - Start'
  trigger:
    platform: numeric_state
    entity_id: sensor.washer_watts
    above: 5
    for:
      seconds: 4
# Make sure washer isn't already running and delaying between cycles - don't re-trigger and cause stopwatch reset
  condition:
    condition: template
    value_template: "{{ states.sensor.washer_state.state != 'Washing' }}"
  action:
    - service: mqtt.publish
      data:
        topic: hass/state/washer
        payload: 'Washing'
        retain: 'true'
- alias: 'Washer State - Idle'
  trigger:
    platform: numeric_state
    entity_id: sensor.washer_watts
    below: 5
    for:
      minutes: 5
  action:
    - service: mqtt.publish
      data:
        topic: hass/state/washer
        payload: 'Idle'
        retain: 'true'
- alias: 'Dryer Finished'
  trigger:
    platform: state
    entity_id: sensor.dryer_state
    from: 'Drying'
    to: 'Idle'
  action:
    - service: media_player.volume_set
      data:
        entity_id:
          - media_player.craft_room_speaker
          - media_player.kitchen_speaker
          - media_player.master_speaker
          - media_player.bedroom_speaker
        volume_level: '0.50'
    - service: tts.google_say
      entity_id:
        - media_player.craft_room_speaker
        - media_player.kitchen_speaker
        - media_player.master_speaker
        - media_player.bedroom_speaker
      data_template:
         message: "Hey.. Guess what..  The dryer is done! Exciting stuff, right?"
- alias: 'Washer Finished'
  trigger:
    platform: state
    entity_id: sensor.washer_state
    from: 'Washing'
    to: 'Idle'
  condition:
    condition: template
    value_template: "{{ states.sensor.dryer_state.state != 'Drying' }}"
  action:
    - service: media_player.volume_set
      data:
        entity_id:
          - media_player.craft_room_speaker
          - media_player.kitchen_speaker
          - media_player.master_speaker
          - media_player.bedroom_speaker
        volume_level: '0.50'
    - service: tts.google_say
      entity_id:
        - media_player.craft_room_speaker
        - media_player.kitchen_speaker
        - media_player.master_speaker
        - media_player.bedroom_speaker
      data_template:

         message: "Laundry in the washer can be moved over!"