ESPHome Home Assistant HD44780 Display

display.yaml

esphome:
  name: heat_display
  on_boot:
    priority: 200
    then:
      - wait_until:
          condition:
            wifi.connected:
          timeout: 5s

esp8266:
  board: esp12e

logger:

api:

ota:
  - platform: esphome
    password: "xxxx"

wifi:
  ssid: "WiFi SSID"
  password: "xxxx"

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Heat Display Fallback Hotspot"
    password: "xxxx"

captive_portal:

i2c:
  sda: GPIO4
  scl: GPIO5
  scan: true
  frequency: 200kHz

text_sensor:
  - platform: wifi_info
    ip_address:
      id: ip_addr

sensor:
  - platform: homeassistant
    id: salon_temp
    entity_id: sensor.czujnik_salon_temperatura_2
    internal: true
    on_value:
      then:
        - lambda: |-
            static float prev = NAN;
            float curr = id(salon_temp).state;
            if (!isnan(prev)) {
              if (curr > prev + 0.1) id(salon_temp_trend) = 1;
              else if (curr < prev - 0.1) id(salon_temp_trend) = -1;
              else id(salon_temp_trend) = 0;
            }
            prev = curr;

  - platform: homeassistant
    id: salon_hum
    entity_id: sensor.czujnik_salon_wilgotnosc_2
    internal: true
    on_value:
      then:
        - lambda: |-
            static float prev = NAN;
            float curr = id(salon_hum).state;
            if (!isnan(prev)) {
              if (curr > prev + 0.5) id(salon_hum_trend) = 1;
              else if (curr < prev - 0.5) id(salon_hum_trend) = -1;
              else id(salon_hum_trend) = 0;
            }
            prev = curr;

  - platform: homeassistant
    id: piec_co
    entity_id: sensor.co
    internal: true
    on_value:
      then:
        - lambda: |-
            static float prev = NAN;
            float curr = id(piec_co).state;
            if (!isnan(prev)) {
              if (curr > prev + 0.1) id(piec_co_trend) = 1;
              else if (curr < prev - 0.1) id(piec_co_trend) = -1;
              else id(piec_co_trend) = 0;
            }
            prev = curr;

  - platform: homeassistant
    id: piec_cwu
    entity_id: sensor.cwu
    internal: true
    on_value:
      then:
        - lambda: |-
            static float prev = NAN;
            float curr = id(piec_cwu).state;
            if (!isnan(prev)) {
              if (curr > prev + 0.1) id(piec_cwu_trend) = 1;
              else if (curr < prev - 0.1) id(piec_cwu_trend) = -1;
              else id(piec_cwu_trend) = 0;
            }
            prev = curr;

  - platform: homeassistant
    id: osuszacz_power
    entity_id: sensor.ikea_of_sweden_inspelning_smart_plug_moc
    internal: true

  - platform: homeassistant
    id: biuro_temp
    entity_id: sensor.czujnik_sonoff_biuro_temperatura_2
    internal: true
    on_value:
      then:
        - lambda: |-
            static float prev = NAN;
            float curr = id(biuro_temp).state;
            if (!isnan(prev)) {
              if (curr > prev + 0.1) id(biuro_temp_trend) = 1;
              else if (curr < prev - 0.1) id(biuro_temp_trend) = -1;
              else id(biuro_temp_trend) = 0;
            }
            prev = curr;

  - platform: homeassistant
    id: biuro_hum
    entity_id: sensor.czujnik_sonoff_biuro_wilgotnosc_2
    internal: true
    on_value:
      then:
        - lambda: |-
            static float prev = NAN;
            float curr = id(biuro_hum).state;
            if (!isnan(prev)) {
              if (curr > prev + 0.1) id(biuro_hum_trend) = 1;
              else if (curr < prev - 0.1) id(biuro_hum_trend) = -1;
              else id(biuro_hum_trend) = 0;
            }
            prev = curr;

  - platform: homeassistant
    id: lazienka_temp
    entity_id: sensor.czujnik_lazienka_temperatura
    internal: true
    on_value:
      then:
        - lambda: |-
            static float prev = NAN;
            float curr = id(lazienka_temp).state;
            if (!isnan(prev)) {
              if (curr > prev + 0.1) id(lazienka_temp_trend) = 1;
              else if (curr < prev - 0.1) id(lazienka_temp_trend) = -1;
              else id(lazienka_temp_trend) = 0;
            }
            prev = curr;

  - platform: homeassistant
    id: lazienka_hum
    entity_id: sensor.czujnik_lazienka_wilgotnosc
    internal: true
    on_value:
      then:
        - lambda: |-
            static float prev = NAN;
            float curr = id(lazienka_hum).state;
            if (!isnan(prev)) {
              if (curr > prev + 0.1) id(lazienka_hum_trend) = 1;
              else if (curr < prev - 0.1) id(lazienka_hum_trend) = -1;
              else id(lazienka_hum_trend) = 0;
            }
            prev = curr;

  - platform: wifi_signal
    id: wifi_rssi
    update_interval: 10s

globals:
  - id: screen
    type: int
    restore_value: no
    initial_value: '0'

  # Trendy dla temperatury
  - id: salon_temp_trend
    type: int
    initial_value: '0'
  - id: biuro_temp_trend
    type: int
    initial_value: '0'
  - id: lazienka_temp_trend
    type: int
    initial_value: '0'

  # Trendy dla wilgotności
  - id: salon_hum_trend
    type: int
    initial_value: '0'
  - id: biuro_hum_trend
    type: int
    initial_value: '0'
  - id: lazienka_hum_trend
    type: int
    initial_value: '0'

  # Trendy dla kotłowni
  - id: piec_co_trend
    type: int
    initial_value: '0'
  - id: piec_cwu_trend
    type: int
    initial_value: '0'

interval:
  - interval: 5s
    then:
      - lambda: |-
          id(screen) = (id(screen) + 1) % 2;

display:
  - platform: lcd_pcf8574
    dimensions: 20x4
    address: 0x27
    update_interval: 1s
    user_characters:
      # Arrow up
      - position: 0
        data:
          - 0b00100
          - 0b01110
          - 0b11111
          - 0b00100
          - 0b00100
          - 0b00100
          - 0b00100
          - 0b00000
      # Arrow down
      - position: 1
        data:
          - 0b00100
          - 0b00100
          - 0b00100
          - 0b00100
          - 0b11111
          - 0b01110
          - 0b00100
          - 0b00000
      - position: 2
        data:
          - 0b00100
          - 0b01000
          - 0b11111
          - 0b01001
          - 0b00101
          - 0b11111
          - 0b00010
          - 0b00100
      - position: 3
        data:
          - 0b00100
          - 0b00100
          - 0b01010
          - 0b01010
          - 0b10001
          - 0b10001
          - 0b10001
          - 0b01110
    lambda: |-
      it.clear();

      switch (id(screen)) {

        // ===== INFO =====
        case 0:
          it.print(0, 0, "SALON");
          it.print(0, 1, "OFFICE");
          it.print(0, 2, "BATH");
          it.print(0, 3, "DRYER");

          // Example:
          // "SALON   20.5C^ 100%v"

          if (!isnan(id(salon_temp).state) && !isnan(id(salon_hum).state)) {
            it.printf(9, 0, "%.1fC %3.0f%%",
              id(salon_temp).state,
              id(salon_hum).state);

            if (id(salon_temp_trend) == 1) it.print(14, 0, "\x08");
            else if (id(salon_temp_trend) == -1) it.print(14, 0, "\x01");

            if (id(salon_hum_trend) == 1) it.print(19, 0, "\x08");
            else if (id(salon_hum_trend) == -1) it.print(19, 0, "\x01");

            it.printf(9, 3, "%dW", (int)id(osuszacz_power).state);
          } else {
            it.print(9, 0, "Czekam...");
          }

          if (!isnan(id(biuro_temp).state) && !isnan(id(biuro_hum).state)) {
            it.printf(9, 1, "%.1fC %3.0f%%",
              id(biuro_temp).state,
              id(biuro_hum).state);

            if (id(biuro_temp_trend) == 1) it.print(14, 1, "\x08");
            else if (id(biuro_temp_trend) == -1) it.print(14, 1, "\x01");

            if (id(biuro_hum_trend) == 1) it.print(19, 1, "\x08");
            else if (id(biuro_hum_trend) == -1) it.print(19, 1, "\x01");
          } else {
            it.print(9, 1, "Czekam...");
          }

          if (!isnan(id(lazienka_temp).state) && !isnan(id(lazienka_hum).state)) {
            it.printf(9, 2, "%.1fC %3.0f%%",
              id(lazienka_temp).state,
              id(lazienka_hum).state);

            if (id(lazienka_temp_trend) == 1) it.print(14, 2, "\x08");
            else if (id(lazienka_temp_trend) == -1) it.print(14, 2, "\x01");

            if (id(lazienka_hum_trend) == 1) it.print(19, 2, "\x08");
            else if (id(lazienka_hum_trend) == -1) it.print(19, 2, "\x01");
          } else {
            it.print(9, 2, "Czekam...");
          }

          break;

        // ===== CO =====
        case 1:
          it.print(0, 0, "KOTLOWNIA");
          it.print(0, 2, "\x02 CO:");
          it.print(0, 3, "\x03 CWU:");

          if (!isnan(id(piec_co).state) && !isnan(id(piec_cwu).state)) {
            it.printf(9, 2, "%.1fC", id(piec_co).state);
            it.printf(9, 3, "%.1fC", id(piec_cwu).state);

            if (id(piec_co_trend) == 1) it.print(14, 2, "\x08");
            else if (id(piec_co_trend) == -1) it.print(14, 2, "\x01");

            if (id(piec_cwu_trend) == 1) it.print(14, 3, "\x08");
            else if (id(piec_cwu_trend) == -1) it.print(14, 3, "\x01");
          } else {
            it.print(9, 2, "Czekam...");
            it.print(9, 3, "Czekam...");
          }

          break;

        // ===== SYS =====
        case 2:
          it.printf(0, 1, "WiFi RSSI: %d dBm", (int)id(wifi_rssi).state);
          it.printf(0, 2, "IP: %s", id(ip_addr).state.c_str());

          break;
      }