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Deta Light and Fan Switch
AU
Model reference: 6914HA
Deta Light and

Available from:
Bunnings.com.au
Bunnings.co.nz





Install method:
USB to Serial

GPIO #Component
GPIO00 Button2
GPIO01 None
GPIO02 None
GPIO03 LedLinki
GPIO04 Relay3
GPIO05 Button3
GPIO09 None
GPIO10 None
GPIO12 None
GPIO13 Relay2
GPIO14 Relay1
GPIO15 Relay4
GPIO16 Button1
FLAG None
Configuration (old version)
{"NAME":"Deta Fan Speed and Light Controller","GPIO":[18,0,0,158,23,19,0,0,0,22,21,24,17],"FLAG":0,"BASE":18}

Decouple Buttons from Relays

SetOption73 1

Single rule to handle fan speed logic

Rule1
ON SYSTEM#Init DO Backlog var1 3; var2 1 ENDON
ON BUTTON1#State=10 DO power1 Toggle ENDON
ON BUTTON2#State=10 DO event p=%var2% ENDON
ON BUTTON3#State=10 DO event s=%var1% ENDON
ON EVENT#p>0 DO power4 ON ENDON
ON EVENT#p>0 DO power3 ON ENDON
ON EVENT#p>0 DO power2 ON ENDON
ON EVENT#p>0 DO var1 2 ENDON
ON EVENT#p>0 DO var2 0 ENDON
ON EVENT#p=0 DO power3 OFF ENDON
ON EVENT#p=0 DO power4 OFF ENDON
ON EVENT#p=0 DO power2 OFF ENDON
ON EVENT#p=0 DO var1 3 ENDON
ON EVENT#p=0 DO var2 1 ENDON
ON EVENT#s>0 DO var2 0 ENDON
ON EVENT#s=1 DO power3 OFF ENDON
ON EVENT#s=1 DO power4 OFF ENDON
ON EVENT#s=1 DO power2 ON ENDON
ON EVENT#s=1 DO var1 3 ENDON
ON EVENT#s=2 DO power3 OFF ENDON
ON EVENT#s=2 DO power4 ON ENDON
ON EVENT#s=2 DO power2 ON ENDON
ON EVENT#s=2 DO var1 1 ENDON
ON EVENT#s=3 DO power3 ON ENDON
ON EVENT#s=3 DO power4 ON ENDON
ON EVENT#s=3 DO power2 ON ENDON
ON EVENT#s=3 DO var1 2 ENDON
ON POWER2#State=0 DO power4 OFF ENDON
ON POWER2#State=0 DO power3 OFF ENDON
ON POWER2#State=0 DO var1 3 ENDON
ON POWER2#State=0 DO var2 1 ENDON
ON POWER2#State=1 DO power4 ON ENDON
ON POWER2#State=1 DO power3 ON ENDON
ON POWER2#State=1 DO var1 2 ENDON
ON POWER2#State=1 DO var2 0 ENDON

Enable rule with Rule1 1

Description: SetOption73 Decouples the buttons and relay The VAR1 can be thought of as “NextSpeed” and VAR2 as “Next Power”, if it makes it easier to read the code

Notes:

  • Relay 1 is the main light relay controlled by button1 (the light button)
  • Relay 2 is the main fan relay controlled by the button2 (the fan button)
  • Relay 3 is the secondary fan relay controlled by the bottom3 (the array buttons)
  • Relay 4 is the tertiary fan relay not physically connected to any buttons

Rule Logic

  • Relay 3 and 4 will always turn on with Relay 2
  • VAR1 is set to 3 at Initialisation and when the fan is powered off to ensure full power to fan to startup
  • VAR2 is set to 1 at Initialisation to control the fan “next power state”
  • Button 2 will always toggle the power to the fan (and reset state)
  • Button 3 will always decrease speed one at a time 3 -> 2 -> 1 -> 3

*** HOME ASSISTANT - 2021.7 new fan layout needs different config. Old config has been deprecated and no longer works.

  1. Do above steps (SetOption73, Rule1)
  2. Add Rule: (edit the MQTT publish to suit your setup)
    Rule2 ON var1#State DO Publish stat/master-bedroom/%topic%/fanspeed %value% ENDON
    
  3. Activate Rule
    Rule2 1
    
  4. Home Assistant configuration.yaml Notes on fields to change:
    • name (change to your device name)
    • unique_id (anything unique)
    • mqtt topics: replace ‘master-bedroom/bedroomfanlightswitch’ with whatever your setup uses
fan:
  - platform: mqtt
    name: "Master Bedroom Fan"
    unique_id: master_bedroom_fan
    command_topic: "cmnd/master-bedroom/bedroomfanlightswitch/POWER2"
    state_topic: "stat/master-bedroom/bedroomfanlightswitch/POWER2"
    preset_mode_command_topic: "cmnd/master-bedroom/bedroomfanlightswitch/Backlog"
    preset_mode_command_template: >
      {% if value == 'low' %}
        Event s=1
      {% elif value == 'medium' %}
        Event s=2
      {% elif value == 'high' %}
        Event s=3
      {% endif %}
    preset_mode_state_topic: "stat/master-bedroom/bedroomfanlightswitch/fanspeed"
    preset_mode_value_template: >
      {% if value == '2' %}
        high
      {% elif value == '1' %}
        medium
      {% elif value == '3' %}
        low
      {% endif %}
    availability_topic: "tele/master-bedroom/bedroomfanlightswitch/LWT"
    payload_available: "Online"
    payload_not_available: "Offline"
    preset_modes:
      - 'low'
      - 'medium'
      - 'high'

Home Assistant - old fan setup (versions prior to 2021.7)

- platform: mqtt
  name: Bedroom Fan
  command_topic: cmnd/tasmota-7540/Backlog
  state_topic: tele/tasmota-7540/STATE
  state_value_template: >
    {% if value_json.POWER2 == 'ON' %}
      Event p=1
    {% else %}
      Event p=0
    {% endif %}
  speed_command_topic: cmnd/tasmota-7540/Backlog
  speed_state_topic: tele/tasmota-7540/STATE
  speed_value_template: >
    {% if value_json.POWER3 == 'OFF' and value_json.POWER4 == 'OFF' %}
      Event s=1
    {% elif value_json.POWER3 == 'OFF' and value_json.POWER4 == 'ON' %}
      Event s=2
    {% elif value_json.POWER3 == 'ON' and value_json.POWER4 == 'ON' %}
      Event s=3
    {% endif %}
  availability_topic: tele/tasmota-7540/LWT
  payload_available: Online
  payload_not_available: Offline
  payload_low_speed: "Event s=1"
  payload_medium_speed: "Event s=2"
  payload_high_speed: "Event s=3"
  payload_off: "Event p=0"
  payload_on: "Event p=1"
  speeds:
    - low
    - medium
    - high