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DETA Grid Connect Smart Switch (Single / Double / Triple / Quad)

DETA Grid Connect Smart Switch (Single / Double / Triple / Quad)

Device Type: switch
Electrical Standard: au
Board: bk72xx

General Notes

The DETA Smart Single Switch (6911HA) and Smart Double Switch (6912HA) are made by Arlec as part of the Grid Connect ecosystem, and are sold at Bunnings in Australia and New Zealand.

Series 1

Series 1 models could be OTA flashed using using tuya-convert.

Series 2

Recently purchased devices are using the Beken BK7231T microcontroller and can be OTA flashed using using Cloudcutter.

Triple 6903HA and Quad 6904HA The pin outs on the 3 & 4 gang switches are different to the 1 and 2 gang switches.

Getting it up and running

Cloudcutter

Cloudcutter is a tool designed to simplify the process of flashing Tuya-based devices. It allows you to bypass the need for physically opening the device and swapping out chips. By leveraging the cloud APIs, Cloudcutter enables you to flash the firmware remotely, making it a convenient and less intrusive option. Follow the instructions on the Cloudcutter GitHub repository to use this method for flashing your device.

Disassembly

If you can't or don't wish to use Cloudcutter, you can flash directly to the outlet with USB to serial adapter.

Overview

This guide covers the DETA Smart Switches, including the Single (6911HA) and Double (6912HA), which are part of the Grid Connect ecosystem. These switches are available at Bunnings stores in Australia and New Zealand.

Series Information

Series 1 - Flashing

  • Flashing Method: OTA via tuya-convert

Series 2 - Flashing

  • Microcontroller: Beken BK7231T
  • Flashing Method: OTA via Cloudcutter

Note: The Triple 6903HA and Quad 6904HA models have different pinouts compared to the 1 and 2 gang switches.

Setup Guide

Using Cloudcutter

Cloudcutter is a tool designed to simplify the flashing process. Follow the official guide for instructions.

Manual Flashing

If you prefer to flash manually, you'll need a USB to serial adapter. Follow the disassembly steps below:

  1. Remove the front plastic face.
  2. Unscrew the two exposed screws.
  3. Remove the clear panel and the small PCB underneath.

Tip: You can convert these switches to ESPHome by replacing the WB3S chip with an ESP-12E or ESP-12F chip and adding a 10k pull-down resistor on GPIO15.

GPIO Pinouts

Tuya-Based Models

PinFunction
GPIO4Status LED (inverted)
GPIO12Button, Bottom
GPIO13Relay, Top (includes LED)
GPIO14Relay, Bottom (includes LED)
GPIO16Button, Top

BK72XX-Based Models

PinFunction
P6Relay, Left (includes LED)
P9Status LED (inverted)
P14Button, Left
P24Button, Right
P26Relay, Right (includes LED)

Note: Each relay shares a pin with its associated LED.

Advanced Modifications

To gain individual control of button LEDs, remove specific diodes and solder a wire from the cathode side of the diode pad to a spare GPIO pin. See this example.

Configuration Examples

1 & 2 Gang Configuration

Only 1 & 2 gang configs updated for the BK72XX configurations.

substitutions:
  devicename: "deta-double-gang"
  friendlyname: Deta Double Gang Switch
  friendlyname_left: Deta Double Gang - Left
  friendlyname_right: Deta Double Gang - Right
  deviceid: deta_double_gang
  deviceicon: "mdi:light-recessed"
  devicemodel: Deta Grid Connect Double Gang 6912HAMBK (Matte Black)


#################################
esphome:
  name: ${devicename}


bk72xx:
  board: generic-bk7231t-qfn32-tuya


packages:
  device_base: !include { file: common/device_base.yaml, vars: { friendlyname : 'Deta Double Gang Switch'} }


#################################


## ---------------- ##
##    Status LED    ##
## ---------------- ##
status_led:
  pin:
    number: P9
    inverted: true


## ---------------- ##
##      Relays      ##
## ---------------- ##
output:
  # Left Relay
  - platform: gpio
    id: relay_left
    pin: P6
  # Right Relay
  - platform: gpio
    id: relay_right
    pin: P26


## ------------ ##
##    Lights    ##
## ------------ ##
light:
  # Left Light
  - platform: binary
    name: ${friendlyname_left}
    icon: ${deviceicon}
    output: relay_left
    id: light_left


  # Right Light
  - platform: binary
    name: ${friendlyname_right}
    icon: ${deviceicon}
    output: relay_right
    id: light_right
    internal: True


## ----------------- ##
##      Buttons      ##
## ----------------- ##
binary_sensor:
  # Left Button
  - platform: gpio
    id: button_left
    pin:
      number: P14
      inverted: true
      mode: INPUT_PULLUP
    on_press:
      then:
        - light.toggle: light_left
    internal: True


  # Right Button
  - platform: gpio
    id: button_right
    pin:
      number: P24
      inverted: true
      mode: INPUT_PULLUP
    on_press:
      then:
        - light.toggle: light_right
    internal: True

3 Gang Configuration

Note: Not updated for BK72XX.

substitutions:
  device_name: deta3gangswitch
  friendly_name: "3 Gang Switch"
  device_ip: 192.168.0.x


#################################


esphome:
  platform: ESP8266
  board: esp01_1m
  name: ${device_name}
  esp8266_restore_from_flash: true


wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  manual_ip:
    static_ip: ${device_ip}
    gateway: 192.168.0.1
    subnet: 255.255.255.0
  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "ESPHOME"
    password: "12345678"


api:
  encryption:
    key: !secret api_encryption_key


ota:
  password: !secret ota_password


logger:


# The web_server & sensor components can be removed without affecting core functionaility.
web_server:
  port: 80


sensor:
  - platform: wifi_signal
    name: ${device_name} Wifi Signal Strength
    update_interval: 60s
  - platform: uptime
    name: ${device_name} Uptime


#################################


status_led:
  pin:
    number: GPIO0
    inverted: True


output:
  # 1st button
  - platform: gpio
    pin: GPIO5
    id: relay1


  # 2nd button
  - platform: gpio
    pin: GPIO14
    id: relay2


  # 3rd button
  - platform: gpio
    pin: GPIO12
    id: relay3


light:
  # 1st button
  - platform: binary
    name: "${friendly_name} 1st"
    output: relay1
    id: light1


  # 2nd button
  - platform: binary
    name: "${friendly_name} 2nd"
    output: relay2
    id: light2


  # 3rd button
  - platform: binary
    name: "${friendly_name} 3rd"
    output: relay3
    id: light3


# Buttons
binary_sensor:
  # 1st button
  - platform: gpio
    pin:
      number: GPIO16
      mode: INPUT
      inverted: True
    name: "${friendly_name} 1st Button"
    #toggle relay on push
    on_press:
      - light.toggle: light1


  # 2nd button
  - platform: gpio
    pin:
      number: GPIO4
      mode: INPUT_PULLUP
      inverted: True
    name: "${friendly_name} 2nd Button"
    #toggle relay on push
    on_press:
      - light.toggle: light2


  # 3rd button
  - platform: gpio
    pin:
      number: GPIO3
      mode: INPUT_PULLUP
      inverted: True
    name: "${friendly_name} 3rd Button"
    #toggle relay on push
    on_press:
      - light.toggle: light3


switch:
  - platform: restart
    name: "${friendly_name} REBOOT"

4 Gang Configuration

Note: Not updated for BK72XX.

substitutions:
  device_name: deta4gangswitch
  friendly_name: "4 Gang Switch"
  device_ip: 192.168.0.x


#################################


esphome:
  platform: ESP8266
  board: esp01_1m
  name: ${device_name}
  esp8266_restore_from_flash: true


wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  manual_ip:
    static_ip: ${device_ip}
    gateway: 192.168.0.1
    subnet: 255.255.255.0
  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "ESPHOME"
    password: "12345678"


api:
  encryption:
    key: !secret api_encryption_key


ota:
  password: !secret ota_password


logger:


# The web_server & sensor components can be removed without affecting core functionaility.
web_server:
  port: 80


sensor:
  - platform: wifi_signal
    name: ${device_name} Wifi Signal Strength
    update_interval: 60s
  - platform: uptime
    name: ${device_name} Uptime


#################################


status_led:
  pin:
    number: GPIO0
    inverted: True


output:
  # 1st button
  - platform: gpio
    pin: GPIO5
    id: relay1


  # 2nd button
  - platform: gpio
    pin: GPIO14
    id: relay2


  # 3rd button
  - platform: gpio
    pin: GPIO12
    id: relay3


  # 4th button
  - platform: gpio
    pin: GPIO15
    id: relay4


light:
  # 1st button
  - platform: binary
    name: "${friendly_name} 1st"
    output: relay1
    id: light1


  # 2nd button
  - platform: binary
    name: "${friendly_name} 2nd"
    output: relay2
    id: light2


  # 3rd button
  - platform: binary
    name: "${friendly_name} 3rd"
    output: relay3
    id: light3


  # 4th button
  - platform: binary
    name: "${friendly_name} 4th"
    output: relay4
    id: light4


# Buttons
binary_sensor:
  # 1st button
  - platform: gpio
    pin:
      number: GPIO16
      mode: INPUT
      inverted: True
    name: "${friendly_name} 1st Button"
    #toggle relay on push
    on_press:
      - light.toggle: light1


  # 2nd button
  - platform: gpio
    pin:
      number: GPIO4
      mode: INPUT_PULLUP
      inverted: True
    name: "${friendly_name} 2nd Button"
    #toggle relay on push
    on_press:
      - light.toggle: light2


  # 3rd button
  - platform: gpio
    pin:
      number: GPIO3
      mode: INPUT_PULLUP
      inverted: True
    name: "${friendly_name} 3rd Button"
    #toggle relay on push
    on_press:
      - light.toggle: light3


  # 4th button
  - platform: gpio
    pin:
      number: GPIO13
      mode: INPUT_PULLUP
      inverted: True
    name: "${friendly_name} 4th Button"
    #toggle relay on push
    on_press:
      - light.toggle: light4


switch:
  - platform: restart
    name: "${friendly_name} REBOOT"
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