homeassistant-config/esphome/sleepingroom.yaml

esphome:
  name: sleepingroom
  platform: ESP32
  board: nodemcu-32s
  
  # Dirty hack, because on_value_range does not trigger green if sensor
  # value is within green range on boot.
  on_boot:
    then:
      - output.set_level:
          id: led_green
          level: 58%
      - output.set_level:
          id: led_red
          level: 0%
      - text_sensor.template.publish:
          id: co2_warn
          state: "grün"

wifi:
  ssid: "Voltage-legacy"
  password: !secret voltage_legacy_psk
  use_address: sleepingroom.home  
  power_save_mode: high
  fast_connect: on

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

captive_portal:

# Enable logging
logger:

# Enable Home Assistant API
api:
  password: !secret api

# Enable over-the-air updates
ota:
  password: !secret ota

# Initialize I²C
i2c:
 - id: bus_a
   sda: 13
   scl: 16
   scan: true

# Initialize LEDC GPIOs
output:
  - platform: ledc
    pin: GPIO17
    id: led_red
  - platform: ledc
    pin: GPIO18
    id: led_green

# Create text sensor to represent CO2 LED warn state (somewhat redundant)
text_sensor:
  - platform: template
    name: "Schlafzimmer CO2 Warnstufe"
    id: co2_warn

sensor:
# WiFi signal strength
  - platform: wifi_signal
    name: "WiFi Signalstärke"
    update_interval: 60s
# SCD30 CO2 +  Temperature + Humidity Sensor
# • Luftqualität Kategorie 1: die LEDs leuchten grün (bis 800 ppm) 
# • Luftqualität Kategorie 2: die LEDs leuchten gelb (900-1200 ppm) 
# • Luftqualität Kategorie 3: die LEDs leuchten orange (1200 bis 1600ppm) 
# • Luftqualität Kategorie 4: die LEDs leuchten rot (ab 1600ppm) 
  - platform: scd30
    i2c_id: bus_a
    co2:
      name: "Schlafzimmer CO2"
      id: co2_value
      accuracy_decimals: 1
      on_value_range:
        - above: 380
          below: 800
          then:
            - output.set_level:
                id: led_green
                level: 58%
            - output.set_level:
                id: led_red
                level: 0%
            - text_sensor.template.publish:
                id: co2_warn
                state: "grün"
        - above: 800
          below: 1200
          then:
            - output.set_level:
                id: led_green
                level: 58%
            - output.set_level:
                id: led_red
                level: 80%
            - text_sensor.template.publish:
                id: co2_warn
                state: "gelb"
        - above: 1200
          below: 1600
          then:
            - output.set_level:
                id: led_green
                level: 50%
            - output.set_level:
                id: led_red
                level: 100%
            - text_sensor.template.publish:
                id: co2_warn
                state: "orange"
        - above: 1600
          then:
            - output.set_level:
                id: led_green
                level: 0%
            - output.set_level:
                id: led_red
                level: 100%
            - text_sensor.template.publish:
                id: co2_warn
                state: "rot"
    temperature:
      name: "Schlafzimmer Temperatur"
      accuracy_decimals: 2
    humidity:
      name: "Schlafzimmer Luftfeuchtigkeit"
      accuracy_decimals: 1
    # SCD30 temp sensor is a bit off
    temperature_offset: 1.5 °C
    ambient_pressure_compensation: 1
    automatic_self_calibration: True
    address: 0x61
    update_interval: 60s
  - platform: bmp280
    i2c_id: bus_a
    temperature:
      name: "Schlafzimmer Temperatur alt"
      oversampling: 16x
    pressure:
      name: "Schlafzimmer Luftdruck"
    address: 0x76
    update_interval: 60s

script:
  - id: startup_animation
    then:
      - delay: 5s
      -