<code>
captive_portal:
  
web_server:
  port: 80 
  version: 3


# Add a template component alongside your GPIO pin
binary_sensor:
  - platform: gpio
    pin:
      number: GPIO5  # Explicitly using GPIO5 instead of the 'D1' alias
      mode: INPUT_PULLUP
      inverted: true
    id: shorted
    internal: true

text_sensor:
  - platform: template
    name: "Tank Full Status"
    lambda: |-
      if (id(shorted).state) {
        return {"True"};
      } else {
        return {"False"};
      }

# Status LED Configuration (Blinks every 5 seconds to show it's alive)
output:
  - platform: gpio
    pin:
      number: GPIO2 # LED_BUILTIN (active low)
      inverted: true
    id: builtin_led

interval:
  - interval: 5s
    then:
      - output.turn_on: builtin_led
      - delay: 25ms
      - output.turn_off: builtin_led  
    
</code>