DETA Grid Connect Smart Switch (Single 6911HA / Double 6912HA / Triple 6903HA / Quad 6904HA): ESPHome

Starter ESPHome config

Built from the pinout above. Keys and the Wi-Fi password come from secrets.yaml in ESPHome. Check the pins against your hardware revision before flashing: one model can ship with different boards.

substitutions:
  name: deta-grid-connect-smart-

esphome:
  name: ${name}
  friendly_name: "DETA Grid Connect Smart Switch (Single 6911HA / Double 6912HA / Triple 6903HA / Quad 6904HA)"

bk72xx:
  board: generic-bk7231n-qfn32-tuya  # BK7231T or BK7231N: check the chip marking

logger:
api:
  encryption:
    key: !secret api_key
ota:
  - platform: esphome
    password: !secret ota_password
wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap: {}
captive_portal:

switch:
  - platform: gpio
    pin: GPIO13
    id: relay1
    name: "Relay 1"  # Relay, Top _(includes LED)_
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: GPIO14
    id: relay2
    name: "Relay 2"  # Relay, Bottom _(includes LED)_
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: GPIO5
    id: relay3
    name: "Relay 3"  # Relay, Top _(includes LED)_
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: GPIO14
    id: relay4
    name: "Relay 4"  # Relay, Middle _(includes LED)_
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: GPIO12
    id: relay5
    name: "Relay 5"  # Relay, Bottom _(includes LED)_
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: P6
    id: relay6
    name: "Relay 6"  # Relay, Left _(includes LED)_
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: P26
    id: relay7
    name: "Relay 7"  # Relay, Right _(includes LED)_
    restore_mode: RESTORE_DEFAULT_OFF

binary_sensor:
  - platform: gpio
    pin:
      number: GPIO12
      mode: INPUT_PULLUP
      inverted: true
    name: "Button 1"  # Button, Bottom
    on_press:
      - switch.toggle: relay1
  - platform: gpio
    pin:
      number: GPIO16
      mode: INPUT_PULLUP
      inverted: true
    name: "Button 2"  # Button, Top
    on_press:
      - switch.toggle: relay2
  - platform: gpio
    pin:
      number: GPIO16
      mode: INPUT_PULLUP
      inverted: true
    name: "Button 3"  # Button, Top
    on_press:
      - switch.toggle: relay3
  - platform: gpio
    pin:
      number: GPIO4
      mode: INPUT_PULLUP
      inverted: true
    name: "Button 4"  # Button, Middle
    on_press:
      - switch.toggle: relay4
  - platform: gpio
    pin:
      number: GPIO3
      mode: INPUT_PULLUP
      inverted: true
    name: "Button 5"  # Button, Bottom
    on_press:
      - switch.toggle: relay5
  - platform: gpio
    pin:
      number: P14
      mode: INPUT_PULLUP
      inverted: true
    name: "Button 6"  # Button, Left
    on_press:
      - switch.toggle: relay6
  - platform: gpio
    pin:
      number: P24
      mode: INPUT_PULLUP
      inverted: true
    name: "Button 7"  # Button, Right
    on_press:
      - switch.toggle: relay7

status_led:
  pin:
    number: GPIO4
    inverted: true  # Status LED _(inverted)_

# Other pins from the pinout:
#   GPIO0: Status LED _(inverted)_
#   P9: Status LED _(inverted)_

How to flash

• Most devices are flashed over UART: a 3.3 V USB-TTL adapter to RX, TX, GND and 3V3, holding GPIO0 to ground at power-on (ESP8266/ESP32). Mains power disconnected.
• Beken (BK72xx) and Realtek chips are flashed with ltchiptool, or with cloudcutter without opening the case if the firmware allows it.
• Details and board photos: the device page in the ESPHome database.

A config from scratch: ESPHome generator. Which pins are safe: pinout.

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