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Eachen ST-DC2 Relay
Eachen ST-DC2

Available from:
Amazon.com
Aliexpress.com



Manufacturer:
Ewelink.eachen.cc


GPIO #Component
GPIO00 Switch3
GPIO01 None
GPIO02 None
GPIO03 None
GPIO04 Relay3
GPIO05 Relay2
GPIO09 Button2
GPIO10 None
GPIO12 Relay1
GPIO13 Led1
GPIO14 Switch4
GPIO15 Relay4
GPIO16 None
FLAG Analog

Template

{"NAME":"Garage Control","GPIO":[11,0,0,0,23,22,18,0,21,52,12,24,0],"FLAG":1,"BASE":18}

This configuration will control and sense the state of 2 garage doors (or similar operating devices)

Supplies:

  • ST-DC2 board
  • 2 reed switches
  • USB power supply
  • micro USB cable

This project is controlled by Home Assistant with communications run through a MQTT server.

To flash the board leads will need to be soldered to 3.3v, RX, TX, Ground, GPIO 4, & GPIO 14.

Only leads Ground, GPIO 4, & GPIO 14 are needed to operate.

After loading the template enter go to the console enter the following: ‘pulseTime1 5’ ‘pulseTime2 5’ This will cause the relays to turn back off after .5 seconds.

Hook the NO side of the relays to the momentary button on the garage door. Use a reed switch wired between GPIO 4 and ground to signal power 3 and GPIO 14 and ground to signal power 4.

Home Assistant

In configuration.yaml add the following:

cover:
- platform: mqtt
    name: "Garage 1"
    state_topic: garage/garageDoor/POWER3
    command_topic: garage/garageDoor/cmnd/POWER1
    availability_topic: garage/garageDoor/LWT
    payload_open: "ON"
    payload_close: "ON"
    payload_stop: "ON"
    state_open: "OFF"
    state_closed: "ON"
    payload_available: "Online"
    payload_not_available: "Offline"
    optimistic: false
    qos: 0
    retain: false
- platform: mqtt
    name: "Garage 2"
    state_topic: garage/garageDoor/POWER4
    command_topic: garage/garageDoor/cmnd/POWER2
    availability_topic: garage/garageDoor/LWT
    payload_open: "ON"
    payload_close: "ON"
    payload_stop: "ON"
    state_open: "OFF"
    state_closed: "ON"
    payload_available: "Online"
    payload_not_available: "Offline"
    optimistic: false
    qos: 0
    retain: false