Color temperature control with rotary encoder

ESPHome
1

Hello all! Trying to figure out how to control cwww leds color temperature with rotary encoder. Can’t find anything in the esphome documentation or google.

Here is my code. Need to paste something instaead of “???”

esphome:
  name: mirror
  platform: ESP32
  board: lolin32

wifi:
  ssid: !secret wifi1_ssid
  password: !secret wifi_pass
  fast_connect: on

  manual_ip:
    static_ip: 192.168.1.56
    gateway: 192.168.1.1
    subnet: 255.255.255.0

  ap:
    ssid: "Mirror Fallback Hotspot"
    password: !secret esphome_ap_pass

# Enable logging
logger:

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

ota:
  password: !secret esphome_pass

sensor:
  - platform: rotary_encoder
    name: "Rotary Encoder"
    pin_a: GPIO19
    pin_b: GPIO23
    resolution: 1
    internal: true
    on_clockwise:
      if:
        condition:
          binary_sensor.is_off: encoder_button
        then:
          - light.dim_relative:
              id: mirror_light
              relative_brightness: 5%
        else:
          ???????
    on_anticlockwise:
      if:
        condition:
          binary_sensor.is_off: encoder_button
        then:
          - light.dim_relative:
              id: mirror_light
              relative_brightness: -5%
        else:
         ???????

binary_sensor:
  - platform: gpio
    pin:
      number: GPIO18
      mode: INPUT_PULLUP
      inverted: True
    id: encoder_button
    internal: true
    on_click:
      min_length: 50ms
      max_length: 350ms
      then:
        - light.toggle:
            id: mirror_light
            transition_length: 0.1s
    on_double_click:
      min_length: 50ms
      max_length: 350ms
      then:
        - light.turn_on:
            id: mirror_light
            color_temperature: 4500 K
            transition_length: 0.5s

  - platform: status
    name: "Mirror Status"

output:
  - platform: ledc
    pin: GPIO1
    id: pwm_ww
    frequency: 156250

  - platform: ledc
    pin: GPIO3
    id: pwm_cw
    frequency: 156250

light:
  - platform: cwww
    name: "Mirror"
    warm_white: pwm_ww
    cold_white: pwm_cw
    warm_white_color_temperature: 2700 K
    cold_white_color_temperature: 5500 K
    constant_brightness: false
    id: mirror_light

switch:
  - platform: restart
    name: "Mirror Reboot"

I will be glad for any help!

2

There’s no dim_relative equivalent for color temperature, but you can do it with a lambda. Be aware that ESPHome internally uses mireds for the color temperature, so if you increase the color temperature with 5% that’s actually a ~4.5% decrease in Kelvins.

Example (untested):

- light.control:
    id: mirror_light
    color_temperature: !lambda
      return id(mirror_light).remote_values.get_color_temperature() * 1.05f;
3

Thanks a lot! Will give it a try.