Setting-up Home Assistant

= Discovery =

* For devices to be automatically discovered by Home Assistant, their configuration must be published as shown below (for an ESP32 Arduino platform):
   Serial.println("Sending discovery data: ");
   client.publish("homeassistant/sensor/mto1_t1/config", 
     "{\"unique_id\": \"mto1_t1\", \"dev_cla\": \"temperature\", \"name\": \"mto1_t1\", \"stat_t\": \"tele/lorabridge/mto1\", \"unit_of_meas\": \"°C\", \"val_tpl\": \"{{ value_json.t1}}\"}" ) ;   
   client.publish("homeassistant/sensor/mto1_t2/config", 
     "{\"unique_id\": \"mto1_t2\", \"dev_cla\": \"temperature\", \"name\": \"mto1_t2\", \"stat_t\": \"tele/lorabridge/mto1\", \"unit_of_meas\": \"°C\", \"val_tpl\": \"{{ value_json.t2}}\"}" ) ;          
   client.publish("homeassistant/sensor/mto1_h/config", 
     "{\"unique_id\": \"mto1_h\", \"dev_cla\": \"humidity\", \"name\": \"mto1_h\", \"stat_t\": \"tele/lorabridge/mto1\", \"unit_of_meas\": \"%\", \"val_tpl\": \"{{ value_json.h}}\"}" ) ;     
   client.publish("homeassistant/sensor/mto1_p/config", 
     "{\"unique_id\": \"mto1_p\", \"dev_cla\": \"pressure\", \"name\": \"mto1_p\", \"stat_t\": \"tele/lorabridge/mto1\", \"unit_of_meas\": \"Pa\", \"val_tpl\": \"{{ value_json.p}}\"}" ) ;
   client.publish("homeassistant/sensor/mto1_a/config", 
     "{\"unique_id\": \"mto1_a\", \"name\": \"mto1_a\", \"stat_t\": \"tele/lorabridge/mto1\", \"unit_of_meas\": \"m\", \"val_tpl\": \"{{ value_json.a}}\"}" ) ;
   client.publish("homeassistant/sensor/mto1_vbat/config", 
     "{\"unique_id\": \"mto1_vbat\", \"name\": \"mto1_vbat\", \"stat_t\": \"tele/lorabridge/mto1\", \"unit_of_meas\": \"V\", \"val_tpl\": \"{{ value_json.vbat}}\"}" ) ;}

The corresponding JSON message for the pressure is the following:
{"unique_id": "mto1_p", "dev_cla": "pressure", "name": "mto1_p", "stat_t": "tele/lorabridge/mto1", "unit_of_meas": "Pa", "val_tpl": "{{ value_json.p}}"}

Here, I have used the abbreviated attributes names.


= EspHome =

== The display ==

The display box incorporates a DFPlayer chip (with its amplifier) and a rotary switch.
The ESPHome configuration file is the following:

 esphome:
  name: esp32dsp1
  platform: ESP32
  board: nodemcu-32s
 
 # Enable logging
 logger:
 
 ota:
  password: "zorglub_1"
 
 wifi:
  ssid: "edvac"
  password: "ae03f5ab16"
  manual_ip:
   static_ip: 192.168.0.43
   gateway: 192.168.0.254
   subnet: 255.255.255.0
  
 output:
   - platform: ledc
     pin: 32
     id: gpio_32_backlight_pwm
   - platform: gpio
     pin: 32
     id: gpio_backlight_off
     inverted: yes
 
 light:
   - platform: monochromatic
     output: gpio_32_backlight_pwm
     name: "ILI9341 Display Backlight"
     id: back_light
     restore_mode: ALWAYS_OFF
     on_turn_off:
       then:
         - delay: 10s
         - light.turn_on:
             id: back_light
 
 spi:
   clk_pin: GPIO18
   mosi_pin: GPIO23
   miso_pin: GPIO19
 
 
 font:
   - file: "fonts/comicsansms.ttf"
     id: my_font
     size: 20
     
 color:
   - id: my_red
     red: 100%
     green: 3%
     blue: 5%
 
 time:
   - platform: homeassistant
     id: homeassistant_time
 
 display:
  - platform: ili9341
    model: TFT 2.4
    cs_pin: 21
    dc_pin: 27
    led_pin: 32
    reset_pin: 33
    id: tft_ha
    rotation: 180
    lambda: |-
     it.fill(COLOR_BLACK);
     // Print time in HH:MM format
     it.strftime(0, 0, id(my_font), "%H:%M", id(homeassistant_time).now());
     it.printf(0, 21, id(my_font), id(my_red), "Temp Eric: %s", id(temp_eric).state.c_str());
     it.printf(0, 42, id(my_font), id(my_red), "Temp living: %s", id(temp_living).state.c_str());
     it.printf(0, 63, id(my_font), id(my_red), "Temp lab: %s", id(temp_lab).state.c_str());
 
 # Example configuration entry
 sensor:
   - platform: rotary_encoder
     name: "dsp rot enc"
     pin_a: 34
     pin_b: 35
     on_clockwise:
     - logger.log: "Turned Clockwise"
     on_anticlockwise:
     - logger.log: "Turned Anticlockwise"
     publish_initial_value: true
 
 binary_sensor:
   - platform: gpio
     pin: 
       number: 25
       mode:
         input: true
         pullup: true    
     name: "dsp_button"
     device_class: window
 
 text_sensor:
   - platform: homeassistant
     entity_id: sensor.0x00124b00226994c4_temperature
     name: "Temp. Eric"
     id: temp_eric
   - platform: homeassistant
     entity_id: sensor.0x00124b0022ebf1ff_temperature
     name: "Temp. living"
     id: temp_living
   - platform: homeassistant
     entity_id: sensor.0x00124b0022697fe1_temperature
     name: "Temp. lab"
     id: temp_lab
 
 uart:
   tx_pin: 17
   rx_pin: 16
   baud_rate: 9600
 
 # Declare DFPlayer mini module
 dfplayer:
   on_finished_playback:
     then:
       logger.log: 'Somebody press play!'
 # Enable Home Assistant API
 api:
  password: "zorglub_1"
  services:
  - service: dfplayer_next
    then:
      - dfplayer.play_next:
  - service: dfplayer_previous
    then:
      - dfplayer.play_previous:
  - service: dfplayer_play
    variables:
      file: int
    then:
      - dfplayer.play: !lambda 'return file;'
  - service: dfplayer_play_loop
    variables:
      file: int
      loop_: bool
    then:
      - dfplayer.play:
          file: !lambda 'return file;'
          loop: !lambda 'return loop_;'
 
  - service: dfplayer_set_volume
    variables:
      volume: int
    then:
      - dfplayer.set_volume: !lambda 'return volume;'
       
  - service: dfplayer_set_eq
    variables:
      preset: int
    then:
      - dfplayer.set_eq: !lambda 'return static_cast<dfplayer::EqPreset>(preset);'
   
  - service: dfplayer_sleep
    then:
      - dfplayer.sleep
  
  - service: dfplayer_reset
    then:
      - dfplayer.reset
   
  - service: dfplayer_volume_up
    then:
      - dfplayer.volume_up
   
  - service: dfplayer_volume_down
    then:
      - dfplayer.volume_down
 
 


= Node Red =

== Node Red for RF switches ==


== Node Red for Ikea switches ==