esphome:
  name: bme280
  board: d1_mini
  platform: esp8266
 
 

# Enable logging
logger:

# Enable Home Assistant API
#api:


ota:
  password: !secret ota

wifi:
  networks:
  - ssid: !secret wifi_ssid
    password: !secret wifi_password
  - ssid: !secret wifi_ssid2
    password: !secret wifi_password2
  domain: .lan

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "bme280 Fallback Hotspot"
    password: !secret ap_password

captive_portal:

web_server:
   port: 80

time:
  - platform: sntp
    timezone: Europe/Amsterdam
    id: time1
   

status_led:
  pin:
    number: GPIO2
    inverted: True



mqtt:
  broker: mqtt.lan
  discovery: true 

i2c:
  sda: D2
  scl: D1
  scan: true

sensor:
  - platform: sht3xd
    temperature:
      name: "SHT30 Temp"
      id: z41_temp
      accuracy_decimals: 2
      filters:
       - offset: -1.9
    humidity:
      name: "SHT30 Hum"
      id: z41_hum
    address: 0x45
    update_interval: 60s
  
  - platform: htu21d
    temperature:
      name: " HTU21 Temp"
      accuracy_decimals: 2
      id: z3_temp
    humidity:
      name: " HTU21 Hum"
      accuracy_decimals: 1
      id: z3_hum

  - platform: bme280
    temperature:
      name: " BME280 Temperature"
      accuracy_decimals: 2
      oversampling: 16x
      id: z7_temp
    pressure:
      name: " BME280 Pressure"
      id: z6_press
    humidity:
      name: " BME280 Humidity"
      id: z6_hum
    address: 0x76
    update_interval: 60s
  - platform: template
    name: " BME280 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(z7_temp).state) /
        (id(z7_temp).state + 243.5)) * id(z6_hum).state * mw) /
        ((273.15 + id(z7_temp).state) * r); // in grams/m^3
    accuracy_decimals: 2
    update_interval: 15s
    icon: 'mdi:water'
    unit_of_measurement: 'g/m³'
  - platform: template
    name: " BME280 Dew Point"
    lambda: |-
      return (243.5*(log(id(z6_hum).state/100)+((17.67*id(z7_temp).state)/
      (243.5+id(z7_temp).state)))/(17.67-log(id(z6_hum).state/100)-
      ((17.67*id(z7_temp).state)/(243.5+id(z7_temp).state))));
    unit_of_measurement: °C
    icon: 'mdi:thermometer-alert'