HA_relative_hygrostat

Home Assistant binary hygrostat based on humidity trend

This is actually a fork of github.com/basschipper/homeassistant-generic-hygrostat. Since there is a name conflict with the introduced HA integration Generic Hygrostat, I renamed the component and made it available here.

How does this differ from the HA Generic Hygorostat?

This implementation switches based on a relitive humidity trend, whereas the generic HA hygrostat switches between a static humidity range. Due to the fact that humidity levels are different during the summer and winter, a static humidity level switch is very complicated and requires outside temperature and humidity sensors to be involved. This binary_sensor detects just the high rises in humidity and switches on. It switches off when the humidity is back to normal. Therefore, it is very usefull for controlling a fan based on humidity.

Setup

In your configuration.yaml you'll need:

binary_sensor:
- platform: relative_hygrostat
  name: Bathroom Hygrostat
  sensor: sensor.bathroom_climate_humidityy # Source humidity sensor
  delta_trigger: 3 # Optional humidity swing to detect. Default = 3
  target_offset: 3 # Optional dehumidification target offset. Default = 3
  min_on_timer: 300 # Optional min on time in seconds. Default = 0 seconds
  max_on_timer: 7200 # Optional safety max on time in seconds. Default = 7200 seconds
  sample_interval: 300 # Optional time between taking humidity samples in seconds, default 300 seconds
  min_humidity: 30 # Optional minimum humidity to enable dehumidification. Default = 0
  unique_id: bathroom_hygrostat # This enables you to edit the device in HAS UI

This will create a binary sensor called binary_sensor.bathroom_hygrostat. Next, add some automations to switch your fan:

automation:
- id: '1234youruniqueID1234'
  alias: Bathroom fan controler
  description: Fan control for bathroom
  mode: single
  trigger:
  - platform: state
    entity_id:
    - binary_sensor.bathroom_hygrostat
  condition: []
  action:
  - choose:
    - conditions:
      - condition: state
        entity_id: binary_sensor.bathroom_hygrostat
        state: 'on'
      sequence:
      - service: switch.turn_on
        data: {}
        target:
        entity_id: switch.bathroom_fan
    default:
      - service: switch.turn_off
        data: {}
        target:
        entity_id: switch.bathroom_fan

Installation

Manual

1. Clone this repo
2. Copy the custom_components/relative_hygrostat folder into your HA's custom_components folder
3. Setup the generic hygrostat custom integration as described above