esphome-config/shelly1_02.yaml

---
# Shelly 2 Power Module
# Location: Upstairs bathroom
#
substitutions:
  project: Upstairs bathroom exhaust
  id: switchexhaust
  hostname: switch-exhaust
  default_humidity_delta_threshold: "1.0"  # Difference between house humidity and bathroom humidity.
  timeout_duration: "600"                  # 600 seconds = 10 minutes

  <<: !include common/substitutions/gpio/shelly1.yaml

<<: !include common/esphome/esp8266.yaml
<<: !include common/common.yaml

script:
  - id: timeout_restart
    then:
      #- if:
      #    condition:
      #      - lambda: return id(remaining_time) < $timeout_duration;
      #    then:
      - globals.set:
          id: remaining_time
          value: !lambda return $timeout_duration;

      - sensor.template.publish:
          id: timeout
          state: !lambda return id(remaining_time);

binary_sensor:
  # Physical Toggle Switch. Monitor for switch position changes internally. Do not expose to Home Assistant.
  - platform: gpio
    pin:
      number: $button_gpio
    id: button
    filters:
      - delayed_on: 10ms
      - delayed_off: 10ms
    on_state:
      - switch.toggle: relay

      - if:
          condition:
            - lambda: return id(diagnostic_last_trigger).state != "PHYSICAL";
          then:
            - text_sensor.template.publish:
                id: diagnostic_last_trigger
                state: PHYSICAL

  # Use motion detection to keep fan running.
  - platform: homeassistant
    id: motion
    entity_id: binary_sensor.upstairs_bathroom_presence

globals:
  - id: remaining_time
    type: int
    restore_value: no
    initial_value: "0"

  # - id: delta_trigger
  #   type: float
  #   restore_value: no
  #   initial_value: $default_humidity_delta_threshold

# Update the timeout timers every 5 seconds.
interval:
  - interval: 5s
    then:
      #- lambda: ESP_LOGD("interval", "diff %.1f > trigger %.1f ", id(humidity_delta).state, id(delta_trigger).state);

      - if: # Humidity threshold trigger.
          condition:
            and:
              # If the difference is greater than the trigger.
              - lambda: return id(humidity_delta).state > id(delta_trigger).state;

              # and the fan is off.
              - switch.is_off: relay
          then:
            - switch.turn_on: relay

            - if:
                condition:
                  - lambda: return id(diagnostic_last_trigger).state != "THRESHOLD";
                then:
                  - text_sensor.template.publish:
                      id: diagnostic_last_trigger
                      state: THRESHOLD

      - if: # Restart the timeout if motion is active.
          condition:
            - binary_sensor.is_on: motion
          then:
            - script.execute: timeout_restart

      - if: # Decrement the timeout.
          condition:
            and:
              - lambda: return id(remaining_time) > 0;
              - lambda: return id(humidity_delta).state <= id(delta_trigger).state;
              - switch.is_on: relay
          then:
            - globals.set:
                id: remaining_time
                value: !lambda return id(remaining_time) -= 5;
            - sensor.template.publish:
                id: timeout
                state: !lambda return id(remaining_time);

          # Time to turn off the relay.
          else:
            - if:
                condition:
                  - switch.is_on: relay
                then:
                  - if:
                      condition:
                        # If the difference is greater than the trigger.
                        - lambda: return id(humidity_delta).state > id(delta_trigger).state;
                      then:
                        - script.execute: timeout_restart
                      else:
                        # Only turn the fan off if the humidity difference is below the trigger.
                        - switch.turn_off: relay

number:
  - platform: template
    name: "$project humidity delta trigger"
    #id: delta_trigger_ui
    id: delta_trigger
    icon: "mdi:rocket-launch"
    entity_category: config
    unit_of_measurement: "%"
    optimistic: true
    initial_value: $default_humidity_delta_threshold
    restore_value: true
    min_value: 0.5
    max_value: 15.0
    step: 0.5
    # set_action:
    #   then:
    #     - globals.set:
    #         id: delta_trigger
    #         value: !lambda return id(delta_trigger_ui).state;

sensor:
  - platform: template
    id: timeout
    name: "$project timeout"
    accuracy_decimals: 0
    icon: "mdi:sort-clock-ascending"
    entity_category: diagnostic
    unit_of_measurement: "seconds"

  - platform: homeassistant
    id: humidity_24h
    internal: true
    accuracy_decimals: 1
    entity_id: sensor.upstairs_bathroom_humidity_average_last_24_hours
    unit_of_measurement: "%"

  - platform: homeassistant
    id: humidity_now
    internal: true
    accuracy_decimals: 1
    entity_id: sensor.upstairs_bathroom_humidity
    unit_of_measurement: "%"
    on_value:
      then:
        - sensor.template.publish:
            id: humidity_delta
            state: !lambda return id(humidity_now).state - id(humidity_24h).state;

  - platform: template
    id: humidity_delta
    name: "$project humidity delta"
    accuracy_decimals: 1
    icon: "mdi:delta"
    entity_category: diagnostic
    unit_of_measurement: "%"

switch:
  - platform: gpio
    id: relay
    pin: $relay_gpio
    on_turn_on:
      # Start the timeout timer.
      - script.execute: timeout_restart
    on_turn_off:
      - sensor.template.publish:
          id: timeout
          state: 0

  - platform: template
    id: virtual_switch
    name: $project
    optimistic: no
    lambda: |-
      return (id(relay).state);
    turn_on_action:
      - switch.turn_on: relay


      - if:
          condition:
            - lambda: return id(diagnostic_last_trigger).state != "VIRTUAL";
          then:
            - text_sensor.template.publish:
                id: diagnostic_last_trigger
                state: VIRTUAL
    turn_off_action:
      - switch.turn_off: relay

text_sensor:
  # Trigger states: PHYSICAL, VIRTUAL (UI or Alexa/Google), THRESHOLD
  - platform: template
    id: diagnostic_last_trigger
    name: "$project last trigger"
    disabled_by_default: true
    entity_category: diagnostic