OXT Wi-Fi 4CH

General Notes

This is Polish brand based on a other Chinese product. Based on Tuya CBU Board. Other device could be found as WSM16-4-WIFI

Product Images

Programming

Solder USB TTL wires like below

To enter bootloader mode, ground CEN pin and power device. I used https://github.com/libretiny-eu/ltchiptool to program it

GPIO Pinout

OXT Wi-Fi 4CH - PCB ZH-Z10 REV 03

Pin	Function
GPIO24	Push Button
GPIO20	Relay #1
GPIO28	Relay #2
GPIO17	Relay #3
GPIO16	Relay #4
GPIO9	Status LED

Basic Configuration

substitutions:
  device_name: oxt-4ch

esphome:
  name: oxt-4ch
  friendly_name: oxt-4ch

bk72xx:
  board: cbu

logger:

captive_portal:

status_led:
  pin:
    number: GPIO9
    inverted: true

output:
  - platform: gpio
    pin: GPIO20
    id: relay1
  - platform: gpio
    pin: GPIO28
    id: relay2
  - platform: gpio
    pin: GPIO17
    id: relay3
  - platform: gpio
    pin: GPIO16
    id: relay4

light:
  - platform: binary
    name: ${device_name} relay 1
    output: relay1
    id: sw1
  - platform: binary
    name: ${device_name} relay 2
    output: relay2
    id: sw2
  - platform: binary
    name: ${device_name} relay 3
    output: relay3
    id: sw3
  - platform: binary
    name: ${device_name} relay 4
    output: relay4
    id: sw4

binary_sensor:
  - platform: gpio
    pin:
      number: GPIO24
      mode: INPUT_PULLUP
      inverted: True
    name: ${device_name} button
  - platform: gpio
    pin:
      number: GPIO8
      mode: INPUT_PULLUP
      inverted: True
    name: ${device_name} switch 1
    on_press:
      - light.toggle: sw1
    on_release:
      - light.toggle: sw1
  - platform: gpio
    pin:
      number: GPIO7
      mode: INPUT_PULLUP
      inverted: True
    name: ${device_name} switch 2
    on_press:
      - light.toggle: sw2
    on_release:
      - light.toggle: sw2
  - platform: gpio
    pin:
      number: GPIO6
      mode: INPUT_PULLUP
      inverted: True
    name: ${device_name} switch 3
    on_press:
      - light.toggle: sw3
    on_release:
      - light.toggle: sw3
  - platform: gpio
    pin:
      number: GPIO26
      mode: INPUT_PULLUP
      inverted: True
    name: ${device_name} switch 4
    on_press:
      - light.toggle: sw4
    on_release:
      - light.toggle: sw4