Build your own ESP8266 based IoT Controller

esphome:
  name: iot-con-prototype
  platform: ESP8266
  board: nodemcuv2

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:
  password: "3f132fc270315361e4d2393a50c2bac5"

wifi:
  ssid: "<your ssid here>"
  password: "<your password here>"

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Iot-Con-Prototype"
    password: "4uSytyPTx1TO"

captive_portal:
#DO NOT COPY ANYTHING ABOVE THIS LINE -------- 
i2c:
  sda: GPIO4
  scl: GPIO5
  scan: true
  id: i2c_bus_a
  
pcf8574:
  - id: 'pcf8574_hub'
    address: 0x22
    pcf8575: false


output:
 - platform: gpio
   id: relay_1
   pin: 
      pcf8574: pcf8574_hub
      number: 0
      mode: OUTPUT
      inverted: true
 - platform: gpio
   id: relay_2
   pin: 
      pcf8574: pcf8574_hub
      number: 1
      mode: OUTPUT
      inverted: true
 - platform: gpio
   id: led_status_1
   pin: 
      pcf8574: pcf8574_hub
      number: 2
      mode: OUTPUT
      inverted: true
 - platform: gpio
   id: led_status_2
   pin: 
      pcf8574: pcf8574_hub
      number: 3
      mode: OUTPUT
      inverted: true

binary_sensor:
  -  platform: gpio
     id: push_button_1
     name: 'Relay1 Pushbutton'
     device_class: ''
     pin:
        pcf8574:  pcf8574_hub
        number: 4
        mode: INPUT
        inverted: true
     on_press:
      then:
        - switch.toggle: switch_relay1
     filters:
       -  delayed_on_off: 50ms
       
  -  platform: gpio
     id: push_button_2
     name: 'Relay2 Pushbutton'
     device_class: ''
     pin:
        pcf8574:  pcf8574_hub
        number: 5
        mode: INPUT
        inverted: true
     on_press:
      #min_length: 50ms
      #max_length: 500ms
      then:
        - switch.toggle: switch_relay2
     filters:
       -  delayed_on_off: 50ms    
switch:
  - platform: output 
    id: switch_relay1
    name: "Relay No. 1 (#0)"
    output: relay_1
    on_turn_on:
    - output.turn_on: led_status_1
    on_turn_off:
    - output.turn_off: led_status_1
  - platform: output 
    id: switch_relay2
    name: "Relay No. 2 (#1)"
    output: relay_2
    on_turn_on:
    - output.turn_on: led_status_2
    on_turn_off:
    - output.turn_off: led_status_2