esphome (wemos d1 mini) sensor phalanx (temperature, humidity, iaq, particles) including a custom component for the waveshare dust sensor (GP2Y1010AU0F)

dusty.yaml

# https://gist.github.com/gretel/3add6f08774f930ef0eaff03b847db64
substitutions:
  devicename: 'dusty'
  upper_devicename: 'Dusty'
  logger_level: INFO

esphome:
  name: ${devicename}
  platform: ESP8266
  #arduino_version: dev
  board: d1_mini
  on_shutdown:
    then:
      - logger.log: shutting down!
  includes:
    - GP2Y1010AU0F.h

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_pass
  domain: '.jitter.local'
  fast_connect: on
  ap:
    ssid: "Node${upper_devicename}"
    password: !secret ap_pass

# over-the-air updates
ota:

logger:
  level: ${logger_level}
  #esp8266_store_log_strings_in_flash: False

status_led:
  pin: 
    number: D4
    inverted: true

# homeassistant
api:

web_server:
  port: 80

text_sensor:
  - platform: version
    name: "${upper_devicename} Version"
    icon: "mdi:exponent-box"

  - platform: wifi_info
    ip_address:
      name: "${upper_devicename} IP Address"
      icon: "mdi:counter"

  - platform: bme680_bsec
    iaq_accuracy:
      name: "${upper_devicename} IAQ Accuracy"
      icon: "mdi:gradient"

i2c:
  sda: D1
  scl: D2
  scan: False

output:
  - platform: gpio
    pin: D6
    id: gpio_fan

switch:
  - platform: restart
    name: "${upper_devicename} Restart"
    icon: "mdi:restart"

  - platform: output
    id: sensor_fan
    name: "${upper_devicename} Fan"
    output: gpio_fan

# script:
# - id: fan_interval_script
#   mode: restart
#   then:
#     - fan.turn_on: sensor_fan
#     - delay: 5s
#     - fan.turn_off: sensor_fan

interval:
  - interval: 1min
    then:
      - logger.log: "Interval"
      - switch.toggle: sensor_fan
      - delay: 5s
      - switch.turn_off: sensor_fan

binary_sensor:
  - platform: status
    name: "${upper_devicename} Status"

time:
  - platform: homeassistant
    id: homeassistant_time

# https://github.com/trvrnrth/esphome-bsec-bme680
# https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/Explanation-on-static-IAQ-breath-VOC-and-CO2-equivalent/td-p/7413
bme680_bsec:
    address: 0x77
    #temperature_offset: 0.5
    #iaq_mode: mobile
    state_save_interval: 4h

sensor:
  - platform: uptime
    name: "${upper_devicename} Uptime"
    update_interval: 5s
    icon: "mdi:clock-start"

  - platform: wifi_signal
    name: "${upper_devicename} WiFi Signal"
    update_interval: 30s
    icon: "mdi:wifi"
    # filters:
    #   - median:

  - platform: bme680_bsec
    temperature:
      id: bme_tmp
      name: "${upper_devicename} Temperature"
      icon: "mdi:temperature-celsius"
      # filters:
      #   - median:
    humidity:
      id: bme_hum
      name: "${upper_devicename} Humidity"
      icon: "mdi:water-percent"
      # filters:
      #   - median:
    pressure:
      id: bme_prs
      name: "${upper_devicename} Pressure"
      icon: "mdi:arrow-collapse-all"
      internal: True
      # filters:
      #   - median:
    gas_resistance:
      id: bme_gas
      name: "${upper_devicename} Gas Resistance"
      icon: "mdi:gas-cylinder"
      # filters:
      #   - median:
    co2_equivalent:
      id: bme_co2_equiv
      name: "${upper_devicename} CO2 Equivalent"
      icon: "mdi:home-outline"
      # filters:
      #   - median:
    breath_voc_equivalent:
      id: bme_voc_equiv
      name: "${upper_devicename} Breath VOC Equivalent"
      icon: "mdi:human"
      # filters:
      #   - median:
    iaq:
      id: bme_iaq
      name: "${upper_devicename} IAQ"
      icon: "mdi:biohazard"
      # filters:
      #   - median:
    iaq_accuracy:
      id: bme_iaq_accuracy
      # IAQ accuracy as a numeric value of 0, 1, 2, 3
      name: "${upper_devicename} IAQ Numeric Accuracy"
      icon: "mdi:gradient"

  # - platform: template
  #   name: "${upper_devicename} Altitude"
  #   lambda: |-
  #     const float STANDARD_SEA_LEVEL_PRESSURE = 1013.25; // hPa
  #     return ((id(bme_tmp).state + 273.15) / 0.0065) *
  #       (powf((STANDARD_SEA_LEVEL_PRESSURE / id(bme_prs).state), 0.190234) - 1); // meter
  #   update_interval: 60s
  #   icon: 'mdi:signal'
  #   unit_of_measurement: 'm'

  - platform: template
    id: "iaq_percentual"
    name: "${upper_devicename} IAQ Percentual"
    lambda: |-
      float x = (id(bme_iaq).state / 500) * 100;
      auto call = id(led).turn_on();
      call.set_transition_length(2000); // ms
      if (x < 25) {
        call.set_brightness(0.2);
        call.set_rgb(0.0, 1.0, 0.0);
      } else if (x < 50) {
        call.set_rgb(0.6, 0.4, 0.0);
        call.set_brightness(0.4);
      } else {
        call.set_rgb(1.0, 0.0, 0.0);
        call.set_brightness(0.6);
      }
      call.perform();
      return x;
    update_interval: 10s
    unit_of_measurement: '%'

  - platform: template
    name: "${upper_devicename} Pressure Equivalent Sea Level"
    lambda: |-
      const float STANDARD_ALTITUDE = 20.0; // in meters, see note
      return id(bme_prs).state / powf(1 - ((0.0065 * STANDARD_ALTITUDE) /
        (id(bme_tmp).state + (0.0065 * STANDARD_ALTITUDE) + 273.15)), 5.257); // in hPa
    update_interval: 60s
    unit_of_measurement: 'hPa'
    icon: 'mdi:waves'

  - platform: template
    name: "${upper_devicename} Absolute Humidity"
    lambda: |-
      const float mw = 18.01534;  // molar mass of water g/mol
      const float r = 8.31447215; // universal gas constant J/mol/K
      return (6.112 * powf(2.718281828, (17.67 * id(bme_tmp).state) /
        (id(bme_tmp).state + 243.5)) * id(bme_hum).state * mw) /
        ((273.15 + id(bme_tmp).state) * r); // in grams/m^3
    accuracy_decimals: 2
    update_interval: 15s
    unit_of_measurement: 'g/m³'
    icon: 'mdi:water'

  - platform: template
    name: "${upper_devicename} Dew Point"
    lambda: return (243.5*(log(id(bme_hum).state/100)+((17.67*id(bme_tmp).state)/(243.5+id(bme_tmp).state)))/(17.67-log(id(bme_hum).state/100)-((17.67*id(bme_tmp).state)/(243.5+id(bme_tmp).state))));
    unit_of_measurement: °C
    update_interval: 15s
    icon: 'mdi:thermometer-alert'

  - platform: custom
    lambda: |-
      auto dust_sensor = new GP2Y1010AU0F();
      App.register_component(dust_sensor);
      return {dust_sensor};
    sensors:
      name: "${upper_devicename} Dust Sensor"
      accuracy_decimals: 2
      unit_of_measurement: "µg/m³"
      icon: "mdi:smog"
      filters:
        - median:

light:
  - platform: fastled_clockless
    name: "${upper_devicename} LED"
    id: led  
    chipset: WS2811
    pin: D7
    num_leds: 1
    rgb_order: GRB
    restore_mode: ALWAYS_OFF
    max_refresh_rate: 16ms
    internal: True

dusty_bread.jpg

dusty_web.png

GP2Y1010AU0F.h

// https://gist.github.com/gretel/3add6f08774f930ef0eaff03b847db64

#include "esphome.h"

static const char *TAG = "GP2Y1010AU0F.sensor";

#define UPDATE_INTERVAL 12000 // update interval in ms

// measure while the sensor is running
#define VOLTAGE_VREF 4.62

#define PIN_ADC 4
#define PIN_EMT 5

class GP2Y1010AU0F : public PollingComponent, public Sensor
{
public:
    GP2Y1010AU0F() : PollingComponent(UPDATE_INTERVAL) {}

    float get_setup_priority() const override { return esphome::setup_priority::DATA; }

    void setup() override
    {
        ESP_LOGCONFIG(TAG, "Setting up sensor");

        pinMode(PIN_EMT, OUTPUT); // emitter
        pinMode(PIN_ADC, INPUT);  // sensor
    }

    void update() override
    {
        float value   = 0;
        float voltage = 0;
        float density = 0;

        // enable led in sensor
        // !! the waveshare board does invert logic
        digitalWrite(PIN_EMT, HIGH);
        delayMicroseconds(280);

        // measure voltage
        value = analogRead(PIN_ADC);
        delayMicroseconds(40);

        // led off
        // !! the waveshare board does invert logic
        digitalWrite(PIN_EMT, LOW);

        // caluclate voltage
        voltage = value * (VOLTAGE_VREF / 1024.0);

        // for calibration
        ESP_LOGCONFIG(TAG, "Measurements done, VRef: %f, ADC Value: %f, Calculated Voltage: %f", VOLTAGE_VREF, value, voltage);

        // taken from https://www.howmuchsnow.com/arduino/airquality/
        publish_state(170 * voltage); // publish
    }
};

secrets.yaml

wifi_ssid: 'T-Mobile'
wifi_pass: 'Lenis4223Penlarge?99ment'
ap_pass: 'WatchaWannaDo256Times'