Really simple big clock

your card with the house and the interior and exterior temperature is so nice,
could you share it?

Sure, no problem. It uses card-mod to change the colour of the outside temperature depending on whether it’s hotter or colder outside, and the colour of the inside temperature to indicate heating vs cooling. There are also a few template helpers to get rid of the temperature units, for example the helper sensor.hvac_target_temp_no_units has a template of

{{state_attr("climate.hvac", "temperature")}}

There might be a tidier way of doing this, but in the end it works pretty well. It also uses scripts to toggle cool/heat (by tapping on the inside house temperature) or to turn the entire HVAC system off and on (by tapping on the outside temperature).

At some point I want to change the sun to a moon based on whether the sun is above the horizon and move those tap actions into small discrete toggle icons, but with HA there’s always something more important/interesting to poke on.

type: vertical-stack
cards:
  - type: picture-elements
    elements:
      - type: conditional
        conditions:
          - entity: climate.hvac
            state: cool
        elements:
          - type: state-label
            entity: sensor.hvac_target_temp_no_units
            style:
              top: 65%
              left: 21%
              transform: scale(3,3)
              color: var(--blue-color)
            tap_action:
              action: call-service
              service: script.thermostat_toggle_cool_heat
              target: {}
          - type: icon
            icon: mdi:snowflake
            style:
              top: 50%
              left: 22.5%
              transform: scale(1.5,1.5)
              color: var(--blue-color)
            tap_action:
              action: call-service
              service: script.thermostat_toggle_cool_heat
              target: {}
      - type: conditional
        conditions:
          - entity: climate.hvac
            state: heat
        elements:
          - type: state-label
            entity: sensor.hvac_target_temp_no_units
            style:
              top: 65%
              left: 22%
              transform: scale(3,3)
              color: var(--red-color)
            tap_action:
              action: call-service
              service: script.thermostat_toggle_cool_heat
              target: {}
          - type: icon
            icon: mdi:fire
            style:
              top: 50%
              left: 22.5%
              transform: scale(1.5,1.5)
              color: var(--red-color)
            tap_action:
              action: call-service
              service: script.thermostat_toggle_cool_heat
              target: {}
      - type: conditional
        conditions:
          - entity: climate.hvac
            state: "off"
        elements:
          - type: state-label
            entity: sensor.inside_temperature_no_units
            style:
              top: 65%
              left: 22%
              transform: scale(3,3)
              color: var(--green-color)
      - type: state-label
        entity: sensor.temperature_no_units
        tap_action:
          action: call-service
          service: script.thermostat_toggle_off
          target: {}
        style:
          top: 25%
          left: 72%
          transform: scale(3,3)
        card_mod:
          style: |
            :host {
              color:
                  {% set tempOut = states('sensor.outside_temperature')|float(0) %}
                  {% set tempIn = states('sensor.hvac_air_temperature')|float(0) %}
                  {% if tempOut > tempIn %}
                    var(--pink-color)
                  {% else %}
                    var(--blue-color)
                  {% endif %}
    image: /local/inside-outside-grey.png
  - type: custom:button-card
    color_type: blank-card
    styles:
      card:
        - height: 50px
view_layout:
  grid-area: thermostat1