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Yozisital Surge Protector with Six Smart Outlets, Three Prong Plug Version: ESPHome

Yozisital Surge Protector with Six Smart Outlets, Three Prong Plug Version (smart plugs, BK72XX): GPIO pinout and a starter ESPHome config with relays, buttons, LED. Local Home Assistant control with no cloud.

Type
Smart plugs
Chip
BK72XX
Region standard
US

Pinout

PinFunction
P6Outlet 1
P7Outlet 2
P8Outlet 3
P23Outlet 4
P24Outlet 5
P26Outlet 6
P11Button
P10Status LED

Find it in shops: AliExpress

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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: yozisital-surge-protecto

esphome:
  name: ${name}
  friendly_name: "Yozisital Surge Protector with Six Smart Outlets, Three Prong Plug Version"

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: P6
    id: relay1
    name: "Relay 1"  # Outlet 1
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: P7
    id: relay2
    name: "Relay 2"  # Outlet 2
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: P8
    id: relay3
    name: "Relay 3"  # Outlet 3
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: P23
    id: relay4
    name: "Relay 4"  # Outlet 4
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: P24
    id: relay5
    name: "Relay 5"  # Outlet 5
    restore_mode: RESTORE_DEFAULT_OFF
  - platform: gpio
    pin: P26
    id: relay6
    name: "Relay 6"  # Outlet 6
    restore_mode: RESTORE_DEFAULT_OFF

binary_sensor:
  - platform: gpio
    pin:
      number: P11
      mode: INPUT_PULLUP
      inverted: true
    name: "Button"  # Button
    on_press:
      - switch.toggle: relay1

status_led:
  pin:
    number: P10
    inverted: true  # Status LED

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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