MiDeskLamp.yaml

esphome:
  name: <YOUR NAME>
  platform: ESP8266
  board: esp01_1m

wifi:
  ssid: "<YOUR SSID>"
  password: "<YOUR PASSWORD>"

  manual_ip:
    static_ip: <YOUR IP>
    gateway: <YOUR GATEWAY>
    subnet: <YOUR SUBNET>
  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "<YOUR FALLBACK SSID>"
    password: "<YOUR FALLBACK PASSWORD>"

captive_portal:

# Enable logging
logger:

# Enable Home Assistant API
api:
  password: "<YOUR API PASSWORD>"

ota:
  password: "<YOUR API PASSWORD>"

sensor:
  - platform: rotary_encoder
    id: rotation
    pin_a: GPIO13
    pin_b: GPIO12
    resolution: 2
    on_value:
      then:
        - if:
            condition:
              # Check if Button is pressed while rotating
              lambda: 'return id(button).state;'
            then:
              # If Button is pressed, change CW/WW
              - lambda: |-
                  auto min_temp = id(light1).get_traits().get_min_mireds();
                  auto max_temp = id(light1).get_traits().get_max_mireds();
                  auto cur_temp = id(light1).current_values.get_color_temperature();
                  auto new_temp = max(min_temp, min(max_temp, cur_temp + (x*20)));
                  auto call = id(light1).turn_on();
                  call.set_color_temperature(new_temp);
                  call.perform();
            else:
              # If Button is not pressed, change brightness
              - light.dim_relative:
                  id: light1
                  relative_brightness: !lambda |-
                    return x / 10.0;
        # Reset Rotation to 0
        - sensor.rotary_encoder.set_value:
            id: rotation
            value: 0

binary_sensor:
  - platform: gpio
    id: button
    pin:
      number: GPIO2
      inverted: True
      mode: INPUT_PULLUP
    on_click: 
      then:
      # use if-condition instead of toggle to set full brightness on turn_on
        - if:
            condition:
              light.is_on: light1
            then:
              - light.turn_off:
                  id: light1
            else:
              - light.turn_on:
                  id: light1
                  brightness: 50%
                  color_temperature: 2700 K

output:
  - platform: esp8266_pwm
    pin: GPIO4
    id: output_cw
  - platform: esp8266_pwm
    pin: GPIO5
    id: output_ww

light:
  - platform: cwww
    id: light1
    default_transition_length: 0s
    constant_brightness: true
    name: "Lights"
    cold_white: output_cw
    warm_white: output_ww
    cold_white_color_temperature: 6500 K
    warm_white_color_temperature: 2600 K
    gamma_correct: 0