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DETA Grid Connect Smart Switch 2 Way 2 Gang (6952HA)

DETA Grid Connect Smart Switch 2 Way 2 Gang (6952HA)

Device Type: switch
Electrical Standard: au
Board: bk72xx
Difficulty: Disassembly required, 3/5

Overview

The DETA Smart Switch 2 Way 2 Gang (6952HA) is part of the Grid Connect ecosystem, and is sold at Bunnings in Australia.

6952HA packet

Also known as:

Variations

As shown on the front of the packet.

VariationMicrocontrollerBoardFirmwareFlashing methods
Series 2Beken BK7231NTuya CB3Sv1.3.5Manual flashing

Setup Guide

Manual Flashing

You'll need a USB to serial adapter.

  1. Remove the front plastic face.
  2. Unscrew the two exposed screws.
  3. Remove the clear panel and the small PCB underneath.
  4. Connect TX, RX, GND and 3V3 to the USB to serial adapter.

6952HA manual flashing

Follow the ltchiptool documentation to flash the microcontroller with ESPHome Kickstart, or build an ESPHome package from the configuration below.

GPIO Pinouts

Series 2 (CB3S) GPIO Pinouts

See Pinouts on CB3S Module Datasheet for more detail

PinFunction
P24Status LED (inverted)
P26Button 1 (inverted)
P23Button 2 (inverted)
P14Relay 1 and Button 1 LED
P6Relay 2 and Button 2 LED
P7Light 1 activation status, taking into account the local activation (this device) xor the remote activation (another device) (inverted)
P8Light 2 activation status, taking into account the local activation (this device) xor the remote activation (another device) (inverted)

Configuration Examples

Series 2 (CB3S) Configuration Examples

substitutions:
  device_name: "deta-2-way-2-gang-switch"


  friendly_name: "DETA 2 Way 2 Gang Switch"
  light_1_name: "${friendly_name} 1"
  light_2_name: "${friendly_name} 2"
  light_1_icon: "mdi:light-recessed"
  light_2_icon: "mdi:light-recessed"


esphome:
  name: ${device_name}
  friendly_name: ${friendly_name}


bk72xx:
  board: cb3s


wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password


logger:


status_led:
  pin:
    number: P24
    inverted: true


light:
  - platform: binary
    output: filter_1
    id: light_1
    name: "${light_1_name}"
    icon: "${light_1_icon}"


  - platform: binary
    output: filter_2
    id: light_2
    name: "${light_2_name}"
    icon: "${light_2_icon}"


binary_sensor:
  # Buttons
  - platform: gpio
    id: button_1
    pin:
      number: P26
      inverted: true
      mode: INPUT_PULLUP
    on_press:
      then:
        - light.toggle: light_1
    internal: true


  - platform: gpio
    id: button_2
    pin:
      number: P23
      inverted: true
      mode: INPUT_PULLUP
    on_press:
      then:
        - light.toggle: light_2
    internal: true


  # Activation statuses
  # Represents the "local" relay (this device) XOR the "remote" relay (another device).
  # It only shows TRUE if one of the "local" or "remote" relays are active, but not both.
  - platform: gpio
    id: activation_status_1
    pin:
      number: P7
      mode: INPUT
      inverted: true  
    internal: true


  - platform: gpio
    id: activation_status_2
    pin:
      number: P8
      mode: INPUT
      inverted: true  
    internal: true


switch:
  # Relays
  - platform: gpio
    id: relay_1
    pin: P14
    internal: true


  - platform: gpio
    id: relay_2
    pin: P6
    internal: true


output:
  # Filters
  # Triggered when the "light" entity is turned on or off. Will only toggle
  # the associated relay if the "light" entity is out of sync with the
  # "activation status"; otherwise do nothing as the state is already correct.Z
  - platform: template
    type: binary
    id: filter_1
    write_action:
      then:
        - if:
            condition:
              - lambda: "return state != id(activation_status_1).state;"
            then:
              - switch.toggle: relay_1


  - platform: template
    type: binary
    id: filter_2
    write_action:
      then:
        - if:
            condition:
              - lambda: "return state != id(activation_status_2).state;"
            then:
              - switch.toggle: relay_2

Add Reboot button to HA

switch:
  - platform: restart
    name: ${friendlyname} REBOOT
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