vindriktning.yaml

# ESPHome MCU replacement for IKEA Vindriktning.
# Sensors
#   - PM1006 PM2.5 particulate sensor (came with IKEA Vindriktning)
#   - PM1006 fan soldered to 3V instead of 5V (quieter) and runs continuously (so don't have the start/stop sound)
#   - SGP30 for TVOC and eCO2
#   - BME280 for temparture, humidity, air pressure
#   - WS2812B led strip of individually addressable RGB LEDs to replace the IKEA led strip on the front

esphome:
  name: vindriktning
  friendly_name: Vindriktning
  on_boot:
    priority: 600
    then:
      - uart.write:
          # Initialise the PM1006 sensor on startup (need to cycle power to sensor as well, not just rest ESP)
          id: ikea_pm1006
          data: [0x11, 0x02, 0x0B, 0x01, 0xE1]
      - light.turn_on:
          id: status_light
          brightness: 100%
          red: 100%
          green: 100%
          blue: 100%
          effect: "Scan"

esp8266:
  board: d1_mini

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  use_address: 10.0.0.13
  ap:
    password: !secret fallback_password
  power_save_mode: LIGHT

captive_portal:

logger:
  logs:
    #sensor: none
    pm1006: none
    #sgp30: none

api:
  on_client_connected:
    - light.turn_on:
        id: status_light
        red: 0%
        green: 100%
        blue: 0%
        effect: "None"

ota:

i2c:
  sda: D2
  scl: D1

uart:
  id: ikea_pm1006
  baud_rate: 9600
  tx_pin: D0
  rx_pin: D5

sensor:
  - platform: pm1006
    update_interval: 20s
    pm_2_5:
      name: "2.5µm"
      on_value:
        then:
          - lambda: |-
              if (x < 10) {
                id(pm25_health).publish_state(0);
              } else if (x < 20) {
                id(pm25_health).publish_state(1);
              } else if (x < 25) {
                id(pm25_health).publish_state(2);
              } else if (x < 50) {
                id(pm25_health).publish_state(3);
              } else if (x < 75) {
                id(pm25_health).publish_state(4);
              } else {
                id(pm25_health).publish_state(5);
              }

  - platform: sgp30
    update_interval: 1s
    eco2:
      name: "eCO2"
      accuracy_decimals: 1
      filters:
        - sliding_window_moving_average:
            window_size: 20
            send_every: 20
      on_value:
        then:
          - lambda: |-
              if (x < 450) {
                id(eco2_health).publish_state(0);
              } else if (x < 700) {
                id(eco2_health).publish_state(1);
              } else if (x < 1000) {
                id(eco2_health).publish_state(2);
              } else if (x < 2500) {
                id(eco2_health).publish_state(3);
              } else if (x < 5000) {
                id(eco2_health).publish_state(4);
              } else {
                id(eco2_health).publish_state(5);
              }
    tvoc:
      name: "TVOC"
      accuracy_decimals: 1
      filters:
        - sliding_window_moving_average:
            window_size: 20
            send_every: 20
      on_value:
        then:
          - lambda: |-
              if (x < 65) {
                id(tvoc_health).publish_state(0);
              } else if (x < 220) {
                id(tvoc_health).publish_state(1);
              } else if (x < 660) {
                id(tvoc_health).publish_state(2);
              } else if (x < 2200) {
                id(tvoc_health).publish_state(3);
              } else if (x < 5500) {
                id(tvoc_health).publish_state(4);
              } else {
                id(tvoc_health).publish_state(5);
              }
    compensation:
      temperature_source: temperature
      humidity_source: humidity

  - platform: bme280
    address: 0x76
    update_interval: 60s
    temperature:
      name: "Temperature"
      id: temperature
      oversampling: 1x
      filters:
        - calibrate_linear:
            method: least_squares
            datapoints:
              - 24.7 -> 21.2
              - 16.3 -> 13.0
    humidity:
      name: "Humidity"
      id: humidity
      oversampling: 1x
      filters:
        - calibrate_linear:
            method: least_squares
            datapoints:
              - 20.0 -> 31.0
              - 27.3 -> 37.1
    pressure:
      name: "Pressure"
      oversampling: 1x

  - platform: wifi_signal
    name: "WiFi signal"

  - platform: uptime
    name: "Uptime"

  - platform: homeassistant
    id: room_brightness
    entity_id: light.bedside_lights
    attribute: brightness
    on_value:
      then:
        - light.turn_on:
            id: status_light
            brightness: !lambda |-
              if (isnan(x)) {
                return 0;
              } else {
                return x/255.0;
              }

  - platform: template
    name: "2.5µm Health"
    id: pm25_health
    update_interval: 20s
    on_value:
      - script.execute: update_status_light

  - platform: template
    name: "eCO2 Health"
    id: eco2_health
    update_interval: 20s
    on_value:
      - script.execute: update_status_light

  - platform: template
    name: "TVOC Health"
    id: tvoc_health
    update_interval: 20s
    on_value:
      - script.execute: update_status_light

light:
  - platform: neopixelbus
    id: status_light
    name: Status
    type: GRB
    variant: WS2812
    pin: D3
    num_leds: 6
    effects:
      - addressable_rainbow:
      - addressable_color_wipe:
      - addressable_scan:
      - addressable_twinkle:
      - addressable_fireworks:
      - addressable_flicker:

switch:
  - platform: restart
    name: "Restart"


script:
  - id: update_status_light
    then:
      - lambda: |-
          auto light = id(status_light).make_call();
          light.set_transition_length(3000);
          uint8_t health = max(id(pm25_health).state, max(id(eco2_health).state, id(tvoc_health).state));
          //ESP_LOGD("update_status_light", "eCO2 %i, TVOC %i -> max %i", id(eco2_health).state, id(tvoc_health).state, health);
          switch (health) {
            case 0:
              light.set_rgb(0, 1, 0);  // dark green
              break;
            case 1:
              light.set_rgb(0.5, 1, 0);  // lighter green
              break;
            case 2:
              light.set_rgb(1, 1, 0);  // yellow
              break;
            case 3:
              light.set_rgb(1, 0.6, 0);  // orange
              break;
            case 4:
              light.set_rgb(1, 0, 0);  // red
              break;
            default:
              light.set_rgb(1, 0, 0.8);  // deep red
          }
          light.perform();


# Colour bands

# CO2
# < 450  Outdoor quality (dark green)
# < 700  Good (green)
# < 1000 Stuffy, acceptable (yellow)
# < 2500 Drowsiness (orange)
# < 5000 Adverse health effects (red)
# > 5000 Limit to max 8 hours (alert)

# TVOC
# < 65   Excellent (dark green)
# < 220  Good (green)
# < 660  Moderate (yellow)
# < 2200 Poor (orange)
# < 5500 Unhealthy (red)
# > 5500 (alert)

# PM2.5  – https://airindex.eea.europa.eu/Map/AQI/Viewer/
# < 10   Good
# < 20   Fair
# < 25   Moderate
# < 50   Poor
# < 75   Very poor
# > 800  Extremley poor


# 2 Jan
# Current eCO2 baseline: 0x9008, TVOC baseline: 0x9CCF