EspHome yaml for VTAC 3G WiFi Switch (Sonoff T1 Clone)

ESPHome
1

I recently bought a V-TAC Smart WiFi Light Switch (3 Gang) which is ESP8285 based. In fact it appears a close clone of a Sonoff T1 3G. It flashed easily and worked perfectly with Tasmota set a T1

It has the same functionality - 3 Touch buttons. Each controls a relay and has its own White LED to indicate “on”. Like the T1 it has a blue backlight LED that can be set “ON” when all 3 switches are “OFF”. I recreated this in ESP Home as below. Only the 3 switches are exposed to HA - logic for the backlight is kept internal.

For each Relay a template sensor is created that tracks the relay state. The Sensor on state change is then used to set the back light accordingly.

I’ve used a single substitution to ensure unique identities throughout the script. If I get a second I can simply copy the complete firmware, change the id used in the substitution once and the switches will have a unique entity in Home assistant. Any number of ways to accomplish similar I’m sure. Having ESP home opens up complete flexibility to treat the buttons with Click / Double Click / Long Hold etc differently. In this case I just wanted basic functionality and chose not to expose the buttons directly to HA - just the relays.

esphomeyaml:
  name: esp_vt3g_01
  platform: ESP8266
  board: esp8285

wifi:
  domain: .local
  ssid: xxxxxx
  password: xxxxxx
  manual_ip:
    static_ip: 192.168.1.54
    gateway: 192.168.1.254
    subnet: 255.255.255.0

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:

substitutions:
# Unique switch ID
  switch_id: "vt3g_01"
  
  
binary_sensor:
  - platform: gpio
    id: ${switch_id}_in_switch1
    internal: true
    pin: 0
    name: "${switch_id} Touch Switch 1"
    filters:
      - invert:
    on_click:
      min_length: 50ms
      max_length: 350ms
      then:
        - switch.toggle: ${switch_id}_out_relay1
  - platform: gpio
    id: ${switch_id}_in_switch2
    internal: true
    pin: 9
    name: "${switch_id} Touch Switch 2"
    filters:
      - invert:
    on_click:
      min_length: 50ms
      max_length: 350ms
      then:
        - switch.toggle: ${switch_id}_out_relay2
  - platform: gpio
    id: in_switch3
    internal: true
    pin: 10
    name: "${switch_id} Touch Switch 3"
    filters:
      - invert:
    on_click:
      min_length: 50ms
      max_length: 350ms
      then:
        - switch.toggle: ${switch_id}_out_relay3
  - platform: template
    name: "${switch_id} Template 1"
    id: ${switch_id}_template1
    internal: true
    lambda: |-
      if (id(${switch_id}_out_relay1).state) {
        return true;
      } else {
        return false;
      }
    on_state:
      - if:
          condition:
            or:
              - binary_sensor.is_on: ${switch_id}_template1
              - binary_sensor.is_on: ${switch_id}_template2
              - binary_sensor.is_on: ${switch_id}_template3
          then:
            - switch.turn_off: ${switch_id}_out_led
      - if:
          condition:
            and:
              - binary_sensor.is_off: ${switch_id}_template1
              - binary_sensor.is_off: ${switch_id}_template2
              - binary_sensor.is_off: ${switch_id}_template3
          then:
            - switch.turn_on: ${switch_id}_out_led  
  - platform: template
    name: "${switch_id} Template 2"
    id: ${switch_id}_template2
    internal: true
    lambda: |-
      if (id(${switch_id}_out_relay2).state) {
        return true;
      } else {
        return false;
      }
    on_state:
      - if:
          condition:
            or:
              - binary_sensor.is_on: ${switch_id}_template1
              - binary_sensor.is_on: ${switch_id}_template2
              - binary_sensor.is_on: ${switch_id}_template3
          then:
            - switch.turn_off: ${switch_id}_out_led
      - if:
          condition:
            and:
              - binary_sensor.is_off: ${switch_id}_template1
              - binary_sensor.is_off: ${switch_id}_template2
              - binary_sensor.is_off: ${switch_id}_template3
          then:
            - switch.turn_on: ${switch_id}_out_led  
  - platform: template
    name: "${switch_id} Template 3"
    id: ${switch_id}_template3
    internal: true
    lambda: |-
      if (id(${switch_id}_out_relay3).state) {
        return true;
      } else {
        return false;
      }
    on_state:
      - if:
          condition:
            or:
              - binary_sensor.is_on: ${switch_id}_template1
              - binary_sensor.is_on: ${switch_id}_template2
              - binary_sensor.is_on: ${switch_id}_template3
          then:
            - switch.turn_off: ${switch_id}_out_led
      - if:
          condition:
            and:
              - binary_sensor.is_off: ${switch_id}_template1
              - binary_sensor.is_off: ${switch_id}_template2
              - binary_sensor.is_off: ${switch_id}_template3
          then:
            - switch.turn_on: ${switch_id}_out_led  
switch:
  - platform: gpio
    pin: 12
    id: ${switch_id}_out_relay1
    name: "${switch_id} Touch Relay 1"
  - platform: gpio
    pin: 5
    id: ${switch_id}_out_relay2
    name: "${switch_id} Touch Relay 2"
  - platform: gpio
    pin: 4
    id: ${switch_id}_out_relay3
    name: "${switch_id} Touch Relay 3"
  - platform: gpio
    pin: 13
    internal: true
    id: ${switch_id}_out_led
    inverted: yes
    name: "${switch_id} Touch Status Led"
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