air-quality-d1.yaml

esphome:
  name: air-quality-d1

esp8266:
  board: d1

# Enable logging
logger:

# Enable Home Assistant API
api:

ota:

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Air-Quality-D1 Fallback Hotspot"
    password: "WpY0RQn3vKNO"

captive_portal:
    
uart:
  rx_pin: GPIO4
  baud_rate: 9600

text_sensor:
  - platform: template
    name: "Particulate Matter Level"
    id: pm_level

sensor:
  - platform: pm1006
    pm_2_5:
      id: pm_internal
      internal: true
      name: "Particulate Matter 2.5µm Concentration Internal"
      filters:
        - throttle: 1s
      on_value:
        then:
            lambda: |-
                id(particulate_matter_2_5um_concentration).publish_state(x);
  - platform: template
    id: particulate_matter_2_5um_concentration
    name: "Particulate Matter 2.5µm Concentration"
    unit_of_measurement: "µm"
    device_class: pm25
    filters:
      - sliding_window_moving_average:
          window_size: 5
          send_every: 20
    on_value:
        then:
            lambda: |-
                if(x < 45) {
                    if(id(pm_level).state != "low") {
                        id(pm_level).publish_state("low");
                    }
                } else if(x < 75) {
                    if(id(pm_level).state != "med") {
                        id(pm_level).publish_state("med");
                    }
                } else if(id(pm_level).state != "high") {
                    id(pm_level).publish_state("high");
                }