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OXT Wi-Fi 3CH

OXT Wi-Fi 3CH

Device Type: relay
Electrical Standard: global
Board: bk72xx
Difficulty: Soldering required, 4/5

General Notes

This is Polish brand based on a other Chinese product. Based on Tuya CB3S Board.

Product Images

main view pcb

Programming

Solder USB TTL wires like below

soldering

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 3CH - PCB ZH-Z02-A REV:C

PinFunction
P7Relay #1
P8Relay #2
P9Relay #3
P14Status LED

Basic Configuration

substitutions:
  device_name: oxt-3ch


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


bk72xx:
  board: cb3s


logger:


captive_portal:


status_led:
  pin:
    number: GPIO9
    inverted: true


switch:
  - platform: gpio
    pin: P7
    id: relay1
  - platform: gpio
    pin: P8
    id: relay2
  - platform: gpio
    pin: P9
    id: relay3


binary_sensor:
  - platform: gpio
    pin:
      number: P6
      mode: INPUT_PULLUP
      inverted: True
    name: ${device_name} switch 1
    on_press:
      - light.toggle: relay1
    on_release:
      - light.toggle: relay1
  - platform: gpio
    pin:
      number: P24
      mode: INPUT_PULLUP
      inverted: True
    name: ${device_name} switch 2
    on_press:
      - light.toggle: relay2
    on_release:
      - light.toggle: relay2
  - platform: gpio
    pin:
      number: P26
      mode: INPUT_PULLUP
      inverted: True
    name: ${device_name} switch 3
    on_press:
      - light.toggle: relay3
    on_release:
      - light.toggle: relay3
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