tuyamcu_ws-df01_touchlamp.yaml

# ESPHome config for TuyaMCU based dimmer WF-DS01
# Dave T 2020-10-31, last update 2023-10-29
# Includes:
#   - full control of dimmer through home assistant
#   - green LED visible under '+' touch input for status/error indication
#   - secondary touch input for use with TTP233 style touch sensor
#     (e.g. connected to metalwork of table lamp), with 4 level instant
#     dimmer levels.
#   - auto full-off of lamp if brightness set to very low value.
#
esphome:
  name: lampd2
  platform: ESP8266
  board: esp01_1m

wifi:
  domain: .local
  ssid: "redacted"
  password: "redacted"

# Enable logging
logger:
  baud_rate: 0
  level: DEBUG
  logs:
    sensor: ERROR
    duty_cycle: ERROR
    binary_sensor: ERROR
    light: ERROR

# Enable Home Assistant API
api:

ota:

web_server:

tuya:

time:
  - platform: homeassistant

substitutions:
  lamp_id: "Lamp D2"

# Uart definition to talk to MCU dimmer
uart:
  tx_pin: GPIO1
  rx_pin: GPIO3
  stop_bits: 1
  baud_rate: 9600

sensor:
  # wifi Signal strength
  - platform: wifi_signal
    name: "${lamp_id} WiFi Signal Sensor"
    update_interval: 60s
  # Internal measure of brightness to allow switch to full off when v low.
  - platform: template
    name: "Brightness sensor"
    id: "brightness_internal"
    update_interval: 5s
    internal: True
    lambda: |-
      float brightness;
      id(light_main).current_values_as_brightness( &brightness );
      return brightness;
    on_value_range:
      below: 0.05
      then:
        - light.turn_off: light_main

# Status indicator using green LED (slow on warning, fast on error)
status_led:
  pin: GPIO14

# Uncomment if you want full control of the built in green LED
# output:
#   - platform: esp8266_pwm
#     pin: GPIO14
#     frequency: 800 Hz
#     id: dummy_pwm

# Primary Light object exposed to HA
light:
  - platform: tuya
    id: light_main
    name: "${lamp_id} Light"
    dimmer_datapoint: 2
    switch_datapoint: 1
  # Uncomment for full brightness control of green LED
  # - platform: monochromatic
  #   default_transition_length: 500ms
  #   name: "${lamp_id} Green LED"
  #   output: dummy_pwm
  #   id: light_green
  #   internal: True
    # effects:
    #   # Experimental throbbing effect for green LED
    #   - lambda:
    #       name: Throb
    #       update_interval: 1s
    #       lambda: |-
    #         static int state = 0;
    #         auto call = id(light_green).turn_on();
    #         // Transtion of 1000ms = 1s
    #         call.set_transition_length(1000);
    #         if (state == 0) {
    #           call.set_brightness(1.0);
    #         } else if (state == 1) {
    #           call.set_brightness(0.0);
    #         }
    #         call.perform();
    #         state += 1;
    #         if (state >= 2)
    #           state = 0;

#  touch input switch e.g. TTP223 to set specific brightness levels.
binary_sensor:
  - platform: gpio
    pin: GPIO13
    id: touch_switch
    name: "${lamp_id} Touch Switch"
    #internal: True
    on_press:
      then:
        - script.execute: on_touch

button:
  - platform: template
    id: remote_switch
    name: "Remote switch"
    on_press:
      then:
        - script.execute: on_touch
switch:
  - platform: template
    id: touch_active
    name: "Touch active"
    optimistic: true


script:
  # Countdown and deactivate touch after n seconds to ignore stray EMC pulses.
  - id: countdown_touch_active
    mode: restart
    then:
        - switch.turn_on: touch_active
        - delay: 30s
        - switch.turn_off: touch_active
  - id: on_touch
    mode: single
    then:
      - lambda: |-
          const float L0 = 0.02f;
          const float L1 = 0.2f;
          const float L2 = 0.5f;
          const float L3 = 1.0f;
          float brightness;
          if (id(touch_active).state)
          {
            auto call = id(light_main).turn_on();
            id(light_main).current_values_as_brightness( &brightness );
            if( brightness < (L1-0.02))
            {
              ESP_LOGD("test", "L1");
              brightness = L1;
            }
            else if(brightness < L2-0.02)
            {
              ESP_LOGD("test", "L2");
              brightness = L2;
            }
            else if (brightness < L3-0.02)
            {
              ESP_LOGD("test", "L3");
              brightness = L3;
            }
            else
            {
              ESP_LOGD("test", "L0");
              brightness = L0;
            }
            call.set_brightness( brightness );
            call.perform(); 
          }
      - script.execute: countdown_touch_active

# A HA accessible reboot switch if wanted.
# switch:
#   - platform: restart
#     name: "${lamp_id} Restart"