Added yaml files that are used to build the firmware. The example-device.yaml is what can be copied to the top-level ESPHome config directory as a device configuration template.

example-device.yaml

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+# Some substitutions as used by the included yaml file.
+
+substitutions:
+  name: bedside_lamp_office
+  friendly_name: Bedside Lamp Office
+  transition_length: 1s
+
+# Configuration options to connect the device to the network.
+# The api is used for allowing connections from Home Assistant.
+# The ota is used for over the air updates after the first deployment.
+
+wifi:
+  ssid: !secret wifi_ssid
+  password: !secret wifi_password
+
+  ap:
+    ssid: ${friendly_name}
+    password: !secret wifi_ap_fallback_password
+
+captive_portal:
+
+api:
+  password: !secret api_password
+
+ota:
+  password: !secret ota_password
+
+# The rest of the configuration is included.
+
+<<: !include esphome-yeelight_bs2/yeelight_bs2.yaml

yeelight_bs2.yaml

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+esphome:
+  name: $name
+  platform: ESP32
+  board: esp32doit-devkit-v1
+  platformio_options:
+    platform: espressif32@1.11.0
+    platform_packages: |-4
+          framework-arduinoespressif32 @ https://github.com/pauln/arduino-esp32.git#solo-no-mac-crc/1.0.4
+  includes:
+    - esphome-yeelight_bs2/yeelight_bs2.h
+
+# Enable logging
+logger:
+
+# The front panel of the device uses I2C for communication
+# with the ESP32 main board. The panel uses ID 0x10.
+i2c:
+  sda: 17
+  scl: 18
+  scan: True
+  
+output:
+  - platform: gpio
+    id: master1
+    pin: GPIO33
+  - platform: gpio
+    id: master2
+    pin: GPIO4    
+  - platform: ledc
+    id: led_r
+    pin: GPIO13
+  - platform: ledc
+    id: led_g
+    pin: GPIO14
+  - platform: ledc
+    id: led_b
+    pin: GPIO5
+  - platform: ledc
+    id: led_w
+    pin: GPIO12
+
+light:
+  - platform: custom
+    lambda: |-
+      auto bs2light = new esphome::rgbww::YeelightBedsideLampV2LightOutput(
+           led_r, led_g, led_b, led_w, master1, master2);
+      App.register_component(bs2light);
+      return {bs2light};
+    lights:
+      - name: ${friendly_name} RGBW Light
+        default_transition_length: ${transition_length}