eWelink 5V/12V Inching Relay

Notes

• This device is advertised in eWelink as Coolkit 0185, which is a generic name used for more devices
• Has a red LED attached to the relay output that cannot be controlled independently
• Has a button for RF pairing, but the unit tested had no RF radio meaning it’s a useless button

Product Images

Programming

This device is powered by a PSF-B01 board (ESP8285). You can flash it through the programming pins:

The button which is aligned with the micro-USB port is connected to GPIO0. You can use it to boot the board into flashing mode. You can also use the micro-USB to power the board with 5V during the flash, just make sure to still bridge GND with your programmer.

GPIO Pinout

Board Configuration

esphome:
  project:
    name: eWelink.5V/12V Inching Relay
esp8266:
  board: esp8285
binary_sensor:
  - platform: gpio
    id: button0
    pin:
      number: GPIO0
      mode:
        input: true
        pullup: true
      inverted: true
    on_multi_click:
      - timing:
          - ON for at most 1s
          - OFF for at least 0.2s
        then:
          - switch.turn_on: relay
light:
  - platform: status_led
    id: wifi_led
    pin:
      number: GPIO13
      inverted: true
switch:
  - platform: gpio
    id: relay
    pin: GPIO12
    on_turn_on:
      - delay: 1s
      - switch.turn_off: relay