Note: this may not be needed if the pull request has been merged.

Check esphome/esphome#2956 for current status.

external_components:

• source: github://pr#2956
  components: [nextion]
  refresh: 1h

Set some variables for convenience

substitutions:
node_name: nspanel
device_name: NSPanel
target_temp_normal: 21.0 °C
target_temp_away: 21.0 °C

esphome:
name: $node_name
comment: $device_name

esp32:
board: esp32dev

wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password

# Optional manual IP

manual_ip:
static_ip: 192.168.1.74
gateway: 192.168.1.1
subnet: 255.255.255.0

Enable fallback hotspot (captive portal) in case wifi connection fails

ap:
ssid: "Panel Fallback Hotspot"
password: "MsRx7nEeio2B"

Enable logging

logger:
baud_rate: 0
level: VERBOSE
logs:
rtttl: none
#homeassistant: DEBUG
binary_sensor: none
nextion: none
ledc.output: none
resistance: none
ntc: none
sensor: none
sensor.filter: none
nextion_sensor: none
api.service: none
esp32.preferentes: none
#climate: DEBUG
#homeassistant.service: DEBUG
scheduler: none
json: none
api: none

Enable wireless updates

ota:
password: !secret ota_pwd

Enable Home Assistant API

api:
encryption:
key: "Y/HgkY8GkhF5U3W2sFwXd0302o72Jz/aaHS+flR0dIY="
services:
# Service to play a song
- service: play_rtttl
variables:
song_str: string
then:
- rtttl.play:
rtttl: !lambda 'return song_str;'
- service: upload_tft
then:
- lambda: 'id(disp1)->upload_tft();'

- service: send_command

variables:

cmd: string

then:

- lambda: 'id(disp1).send_command_printf("%s", cmd.c_str());'

web_server:
port: 80

time:

• platform: homeassistant
  id: homeassistant_time
  timezone: Europe/Madrid
  on_time:
  • seconds: 0
    minutes: '*'
    then:
    • lambda: |-
      id(disp1).set_component_text_printf("page0.wind", "%i km/h", (int)id(wind_speed).state);

- script.execute: tft_date_update

- script.execute: tft_time_update

- script.execute: tft_weather_update

A reboot button is always useful

button:

• platform: restart
  name: Restart $device_name

Define some inputs

binary_sensor:

Switches between HEAT or OFF mode

• platform: gpio
  name: $device_name Left Button
  pin:
  number: 14
  inverted: true
  on_press:
  then:
  - climate.control:
  id: caldera
  mode: !lambda |-
  if (id(caldera).mode==CLIMATE_MODE_OFF)
  {
  return CLIMATE_MODE_HEAT;
  }
  else
  {
  return CLIMATE_MODE_OFF;
  }
  - lambda: !lambda |-
  if (id(caldera).mode==CLIMATE_MODE_OFF)
  {
  id(disp1).set_component_text_printf("page0.btn0", "APAGAR");
  }
  else
  {
  id(disp1).set_component_text_printf("page0.btn0", "ENCENDER");
  }

- logger.log: id(caldera).mode

    - script.execute: tft_wake_up

Switches between a predefined "night" or "away" target temperature and a "normal" target temperature

this will be also automated in homeassistant, but it is nice to have a button for it

• platform: gpio
  name: $device_name Right Button
  pin:
  number: 27
  inverted: true
  on_press:
  then:
  - climate.control:
  id: caldera
  mode: !lambda |-
  if (id(caldera).mode==CLIMATE_MODE_HEAT)
  {
  id(disp1).set_component_text_printf("page0.btn1", "ACTIVO : FRIO");
  return CLIMATE_MODE_COOL;

        }
        else
        {
          id(disp1).set_component_text_printf("page0.btn1", "ACTIVO : CALOR");
          return CLIMATE_MODE_HEAT;
        }
  - lambda: !lambda |-
      if (id(caldera).mode==CLIMATE_MODE_HEAT)
      {
      id(disp1).set_component_text_printf("page0.btn1", "ACTIVO : FRIO");
      }
      else
      {
      id(disp1).set_component_text_printf("page0.btn1", "ACTIVO : CALOR");
      }
  

- logger.log: id(caldera).mode

    - script.execute: tft_wake_up

• platform: nextion
  name: $device_name Up Button
  page_id: 0
  component_id: 6
  on_press:
  then:
  - climate.control:
  id: caldera
  target_temperature_low: !lambda |-
  if ( id(caldera).mode == CLIMATE_MODE_COOL )
  {
  return id(caldera).target_temperature_low + 0.5;
  }
  else
  {
  return id(caldera).target_temperature_low;
  }
  target_temperature_high: !lambda |-
  if ( id(caldera).mode == CLIMATE_MODE_HEAT )
  {
  return id(caldera).target_temperature_high + 0.5;
  }
  else
  {
  return id(caldera).target_temperature_high;
  }
  - lambda: !lambda |-
  if ( id(caldera).mode == CLIMATE_MODE_COOL )
  {
  id(disp1).set_component_text_printf("page0.setTemp", "%.1f""\xb0", id(caldera).target_temperature_low);
  }
  else
  {
  id(disp1).set_component_text_printf("page0.setTemp", "%.1f""\xb0", id(caldera).target_temperature_high);
  }

preset: HOME

- script.execute: update_target_temperature

- rtttl.play: "twobits:d=4,o=5,b=220:c6,8g"

• platform: nextion
  name: $device_name Down Button
  page_id: 0
  component_id: 7
  on_press:
  then:

  - climate.control:
      id: caldera
      target_temperature_low: !lambda |-
        if ( id(caldera).mode == CLIMATE_MODE_COOL )
        {
        return id(caldera).target_temperature_low - 0.5;
        id(disp1).set_component_text_printf("page0.setTemp", "%.1f""\xb0", id(caldera).target_temperature_low);
        }
        else
        {
        return id(caldera).target_temperature_low;
        id(disp1).set_component_text_printf("page0.setTemp", "%.1f""\xb0", id(caldera).target_temperature_low);
        }
      target_temperature_high: !lambda |-
        if ( id(caldera).mode == CLIMATE_MODE_HEAT )
        {
        return id(caldera).target_temperature_high - 0.5;
        id(disp1).set_component_text_printf("page0.setTemp", "%.1f""\xb0", id(caldera).target_temperature_high);
        }
        else
        {
        return id(caldera).target_temperature_high;
        id(disp1).set_component_text_printf("page0.setTemp", "%.1f""\xb0", id(caldera).target_temperature_high);
        }
  - lambda: !lambda |-
        if ( id(caldera).mode == CLIMATE_MODE_COOL )
        {
        id(disp1).set_component_text_printf("page0.setTemp", "%.1f""\xb0", id(caldera).target_temperature_low);
        }
        else
        {
        id(disp1).set_component_text_printf("page0.setTemp", "%.1f""\xb0", id(caldera).target_temperature_high);
        }
  

- script.execute: update_target_temperature

- rtttl.play: "twobits:d=4,o=5,b=220:c6,8g"

- script.execute: update_target_temperature

- rtttl.play: "twobits:d=4,o=5,b=220:c6,8g"

sensor:

• platform: wifi_signal
  name: $device_name WiFi Signal
  update_interval: 60s

• platform: adc
  id: ntc_source
  pin: 38
  update_interval: 10s
  attenuation: 11db

• platform: resistance
  id: resistance_sensor
  sensor: ntc_source
  configuration: DOWNSTREAM
  resistor: 11.2kOhm

• platform: ntc
  id: temperature
  sensor: resistance_sensor
  accuracy_decimals: 2
  filters:

  • median:
    window_size: 15
    send_every: 10
    send_first_at: 3
    calibration:
    b_constant: 3950
    reference_temperature: 25°C
    reference_resistance: 10kOhm
    name: $device_name Temperature
    on_value:
    then:
    • lambda: 'id(disp1).set_component_text_printf("page0.intTemp", "%.1f""\xb0", x);'

Grab current temperature from Home Assistant

• platform: homeassistant
  id: ext_temperature
  entity_id: sensor.exterior_temperature
  attribute: temperature
  on_value:
  then:
  - lambda: 'id(disp1).set_component_text_printf("page0.extTemp", "%.1f""\xb0", x);'

• platform: homeassistant
  id: wind_speed
  entity_id: weather.aemet_daily
  attribute: wind_speed
  unit_of_measurement: "km/h"
  on_value:
  then:
  - lambda: 'id(disp1).set_component_text_printf("page0.wind", "%i km/h""\xb0", (int)id(wind_speed).state);'

• platform: nextion
  id: current_page
  name: "current_page"
  internal: true
  accuracy_decimals: 0
  variable_name: dp
  update_interval: 1s

text_sensor:

• platform: homeassistant
  id: current_weather
  entity_id: weather.aemet_daily
  on_value:
  then:
  - script.execute: tft_weather_update

script:

• id: tft_weather_update
  then:

  • lambda: |-
    char const *wstr[] = {"clear-night", "cloudy", "fog",
    "lightning", "lightning-rainy", "partlycloudy",
    "pouring", "rainy", "snowy", "sunny"};
    int i = 0;
    while ((id(current_weather).state!=wstr[i])&&(i<12)) {i++;}
    id(disp1).send_command_printf("page0.weather.pic=%i", i+3);
    id(disp1).set_component_text_printf("page0.wind", "%i km/h", (int)id(wind_speed).state);

• id: tft_date_update
  then:

  • lambda: |-
    int dia = id(homeassistant_time).now().day_of_month;
    int mes = id(homeassistant_time).now().month;
    char const *dia_semana[] = {"Domingo", "Lunes", "Martes", "Mierco.", "Jueves", "Viernes", "Sabado"};
    const char *str = dia_semana[id(homeassistant_time).now().day_of_week-1]; // range [1-7], Domingo=1
    id(disp1).set_component_text_printf("page0.date", "%s %02i/%02i", str, dia, mes);

• id: tft_time_update
  then:

  • lambda: 'id(disp1).set_component_text_printf("page0.time", "%s", id(homeassistant_time).now().strftime("%H:%M").c_str());'

• id: tft_wake_up
  then:

  • lambda: |-
    id(disp1).send_command_printf("page0.sleep_cnt.val=page0.sleep_timeout.val");
    id(disp1).send_command_printf("page0.sleep_timer.es=1");
    if (id(current_page).state!=0)
    id(disp1).send_command_printf("page 0");
    id(disp1).send_command_printf("dim=page0.brightness.val");

• id: abrir_frio
  then:

  • logger.log: COOL - abrimos rejilla
  • homeassistant.service:
    service: cover.open_cover
    data:
    entity_id: cover.dormitorio

• id: abrir_calor
  then:

  • logger.log: HEAT - abrimos rejilla
  • homeassistant.service:
    service: cover.open_cover
    data:
    entity_id: cover.dormitorio

• id: cerrar
  then:

  • homeassistant.service:
    service: cover.stop_cover
    data:
    entity_id: cover.dormitorio

Define some outputs

switch:

Relay 2 is the thermostat switch, Relay 1 was physically removed!

• platform: gpio
  name: $device_name Relay
  id: relay_2
  internal: true # it should not be activated directly by home assitant
  pin:
  number: 19

Pin 4 always needs to be on to power up the display

• platform: gpio
  id: screen_power
  entity_category: config
  pin:
  number: 4
  inverted: true
  restore_mode: ALWAYS_ON

• platform: template
  name: $device_name auto sleep
  id: auto_sleep
  entity_category: config
  restore_state: true
  optimistic: true
  on_turn_on:

  • lambda: 'id(disp1).send_command_printf("page0.disable_sleep.val=0");'
    on_turn_off:
  • lambda: 'id(disp1).send_command_printf("page0.disable_sleep.val=1");'

number:

• platform: template
  name: $device_name Brightness
  id: brightness
  entity_category: config
  unit_of_measurement: '%'
  icon: "mdi:brightness-percent"
  min_value: 0
  max_value: 100
  step: 1
  initial_value: 20
  set_action:
  then:
  - lambda: |-
  id(disp1).send_command_printf("page0.sleep_timer.en=1");
  if (id(current_page).state!=0)
  id(disp1).send_command_printf("page 0");
  id(disp1).set_backlight_brightness(x/100);

Sets the sleep timer value

requires code running in the nextion tft to make a 1 second period timer

with a counter and a variable to store the timeout

• platform: template
  name: $device_name Sleep timeout
  id: sleep_timeout
  entity_category: config
  unit_of_measurement: 's'
  icon: "mdi:timer"
  min_value: 3
  max_value: 300
  step: 1
  initial_value: 30
  set_action:
  then:
  - lambda: |-
  id(disp1).send_command_printf("page0.sleep_timeout.val=%i", (int)x); // set the timeout
  id(disp1).send_command_printf("page0.sleep_cnt.val=%i", (int)x); // reset the counter to its maximum

Configure the internal bleeper

output:

• platform: ledc
  id: buzzer_out
  pin:
  number: 21

Enable ringtone music support

rtttl:
id: buzzer
output: buzzer_out

Configure UART for communicating with the screen

uart:
id: tf_uart
tx_pin: 16
rx_pin: 17
baud_rate: 115200

Configure the screen

display:

• platform: nextion
  id: disp1
  uart_id: tf_uart
  tft_url: http://192.168.1.252:8123/local/nspanel_thermostat/nspanel_thermostat.tft
  on_setup:
  then:
  - number.set:
  id: brightness
  value: 20
  - lambda: |-
  id(disp1).set_component_text_printf(
  "page0.intTemp", "%.1f""\xb0", id(temperature).state);
  id(disp1).set_component_text_printf(
  "page0.extTemp", "%.1f""\xb0", id(ext_temperature).state);
  id(disp1).set_component_text_printf("page0.btn0", "APAGAR");
  id(disp1).set_component_text_printf("page0.btn1", "ACTIVO : CALOR");

- script.execute: tft_date_update

- script.execute: tft_time_update

- script.execute: tft_weather_update

- rtttl.play: "twobits:d=4,o=5,b=220:c6,8g,8g,a,g,p,b,c6"

Single-point thermostat (for heating only)

climate:

• platform: thermostat
  id: caldera
  name: $device_name Thermostat
  sensor: temperature
  default_target_temperature_low: 18
  default_target_temperature_high: 28

  heat_deadband: 0.2
  heat_overrun: 0.2
  cool_deadband: 0.2
  cool_overrun: 0.2

  min_heating_off_time: 1s
  min_heating_run_time: 1s
  min_cooling_off_time: 1s
  min_cooling_run_time: 1s

  min_idle_time: 1s

  cool_action:

  • script.execute: abrir_frio

- switch.turn_on: relay_2

heat_action:
  - script.execute: abrir_calor

- switch.turn_on: relay_2

idle_action:
  - logger.log: IDLE - cerramos rejilla
  - script.execute: cerrar

- switch.turn_off: relay_2

on_state:
  - logger.log: "estoy encendido"
  - lambda: !lambda |-
          if ( id(caldera).mode == CLIMATE_MODE_COOL )
          {
          id(disp1).set_component_text_printf("page0.setTemp", "%.1f""\xb0", id(caldera).target_temperature_low);
          }
           else
          {
          id(disp1).set_component_text_printf("page0.setTemp", "%.1f""\xb0", id(caldera).target_temperature_high);
          }

visual:
  min_temperature: 18
  max_temperature: 28
  temperature_step: 0.1
away_config:
  default_target_temperature_low: 19
  default_target_temperature_high: 27