Initial configuration with split config files and without .storage. Files with secrets excluded and ignored.

esphome/.gitignore

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+# Gitignore settings for ESPHome
+# This is an example and may include too much for your use-case.
+# You can modify this file to suit your needs.
+/.esphome/
+**/.pioenvs/
+**/.piolibdeps/
+**/lib/
+**/src/
+**/platformio.ini
+/secrets.yaml

esphome/aussensensor.yaml

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+esphome:
+  name: aussensensor
+  platform: ESP32
+  board: nodemcu-32s
+
+wifi:
+  ssid: "Voltage-legacy"
+  password: !secret voltage_legacy_psk
+  use_address: aussensensor.home  
+  power_save_mode: high
+  fast_connect: on
+
+  # Enable fallback hotspot (captive portal) in case wifi connection fails
+  ap:
+    ssid: "Aussensensor Fallback Hotspot"
+    password: !secret fallback_psk
+
+captive_portal:
+
+# Enable logging
+logger:
+
+# Enable Home Assistant API
+api:
+
+ota:
+  password: !secret ota
+
+# DHT22 sensor
+sensor:
+  - platform: dht
+    model: dht22
+    pin: 25
+    temperature:
+      name: "Temperatur außen"
+    humidity:
+      name: "Luftfeuchtigkeit außen"
+    update_interval: 60s
+# WiFi signal strength
+  - platform: wifi_signal
+    name: "WiFi Signalstärke"
+    update_interval: 60s

esphome/aussensensor/partitions.csv

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+nvs,      data, nvs,     0x009000, 0x005000,
+otadata,  data, ota,     0x00e000, 0x002000,
+app0,     app,  ota_0,   0x010000, 0x1C0000,
+app1,     app,  ota_1,   0x1D0000, 0x1C0000,
+eeprom,   data, 0x99,    0x390000, 0x001000,
+spiffs,   data, spiffs,  0x391000, 0x00F000

esphome/sleepingroom.yaml

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+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
+      - 

esphome/sleepingroom/partitions.csv

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+nvs,      data, nvs,     0x009000, 0x005000,
+otadata,  data, ota,     0x00e000, 0x002000,
+app0,     app,  ota_0,   0x010000, 0x1C0000,
+app1,     app,  ota_1,   0x1D0000, 0x1C0000,
+eeprom,   data, 0x99,    0x390000, 0x001000,
+spiffs,   data, spiffs,  0x391000, 0x00F000