ikea-pm1006.yaml

# https://style.oversubstance.net/2021/08/diy-use-an-ikea-vindriktning-air-quality-sensor-in-home-assistant-with-esphome/
# https://github.com/Hypfer/esp8266-vindriktning-particle-sensor

logger:
  baud_rate: 0

i2c:
  sda: 4
  scl: 5
  scan: True

sensor:
  - platform: bme280_i2c
    temperature:
      name: "${friendly_name} Temperature"
      oversampling: 16x
      accuracy_decimals: 2
    pressure:
      name: "${friendly_name} Pressure"
    humidity:
      name: "${friendly_name} Humidity"
    address: 0x76
    update_interval: 15s

  - platform: pm1006
    uart_id: uart_pm1006
    pm_2_5:
      name: "${friendly_name} PM25 raw"
      id: pm_2_5
      filters:
        # - sliding_window_moving_average:
        #     window_size: 140
        #     send_every: 14
        - multiply: "${pm25_adjust_multplyer}"

  - platform: copy
    source_id: pm_2_5
    id: pm_2_5_average
    name: "${friendly_name} PM25 average"
    accuracy_decimals: 0
    filters:
    - sliding_window_moving_average:
        window_size: 50
        send_every: 10
    #     send_first_at: 20
    on_value:
      lambda: |-
        static int i = 0;
        i++;
        if(i>=1){
          // https://en.wikipedia.org/wiki/Air_quality_index#Computing_the_AQI
          if (id(pm_2_5_average).state < 12.0) {
            // good
            id(aqi_level).publish_state("Good");
            id(pm_2_5_average_aqi).publish_state((50.0 - 0.0) / (12.0 - 0.0) * (id(pm_2_5_average).state - 0.0) + 0.0);
          } else if (id(pm_2_5_average).state < 35.4) {
            // moderate
            id(aqi_level).publish_state("Moderate");
            id(pm_2_5_average_aqi).publish_state((100.0 - 51.0) / (35.4 - 12.1) * (id(pm_2_5_average).state - 12.1) + 51.0);
          } else if (id(pm_2_5_average).state < 55.4) {
            // Unhealthy for Sensitive Groups
            id(aqi_level).publish_state("Unhealthy for Sensitive Groups");
            id(pm_2_5_average_aqi).publish_state((150.0 - 101.0) / (55.4 - 35.5) * (id(pm_2_5_average).state - 35.5) + 101.0);
          } else if (id(pm_2_5_average).state < 150.4) {
            // unhealthy
            id(aqi_level).publish_state("Unhealthy");
            id(pm_2_5_average_aqi).publish_state((200.0 - 151.0) / (150.4 - 55.5) * (id(pm_2_5_average).state - 55.5) + 151.0);
          } else if (id(pm_2_5_average).state < 250.4) {
            // very unhealthy
            id(aqi_level).publish_state("Very Unhealthy");
            id(pm_2_5_average_aqi).publish_state((300.0 - 201.0) / (250.4 - 150.5) * (id(pm_2_5_average).state - 150.5) + 201.0);
          } else if (id(pm_2_5_average).state < 350.4) {
            // hazardous
            id(aqi_level).publish_state("Hazardous");
            id(pm_2_5_average_aqi).publish_state((400.0 - 301.0) / (350.4 - 250.5) * (id(pm_2_5_average).state - 250.5) + 301.0);
          } else if (id(pm_2_5_average).state < 500.4) {
            // hazardous 2
            id(aqi_level).publish_state("Very Hazardous");
            id(pm_2_5_average_aqi).publish_state((500.0 - 401.0) / (500.4 - 350.5) * (id(pm_2_5_average).state - 350.5) + 401.0);
          }
        }

  - platform: template
    name: "${friendly_name} AQI Value"
    device_class: aqi
    unit_of_measurement: "AQI"
    icon: "mdi:air-filter"
    accuracy_decimals: 0
    id: pm_2_5_average_aqi

text_sensor:
  - platform: template
    name: "${friendly_name} AQI Level"
    icon: "mdi:air-filter"
    id: aqi_level

  - platform: template
    name: "${friendly_name} AQI"
    icon: "mdi:air-filter"
    id: aqi
    lambda: return str_sprintf("%.0f - %s", id(pm_2_5_average_aqi).state, id(aqi_level).state.c_str());