OXT Wi-Fi 3CH

bk72xx global Comes with ESPHome relay

General Notes

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

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

Pin	Function
P7	Relay #1
P8	Relay #2
P9	Relay #3
P14	Status 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