KNX Percentage button Summer/Winter/stop system

Configuration
1

Hi,

I have a house, that has a heating / cooling system in place. I do not have access to the ETS file nor the original visualization software, so i am building my own visualization in HA to control the house and customize.

I need a button / buttons where i can choose from 3 different modes:

Summer - sends 0% to 2/7/10 address
Winter - sends 0,4% to 2/7/10 address
Stop system sends 0,8% to 2/7/10 address

status of the system is read out of the same group address and should be translated into different colours like red for Winter with a sun symbol, blue for summer with a snowflake symbol and a stop sign when system is stopped.

it is important the it is comma and not dot in the percentage send to the KNX bus.

Anyone has a good solution / idea to this?

2

Hi :wave:!
This doesn’t look like percentages to me, but more like scene numbers or some proprietary 1byte integer DPT (using values 0, 1 and 2).
You can always use a select entity or multiple button entities to use that.

3

I could be wrong, but this is what i read from the KNX bus:

232 07-04-2024 09:51:06,742 fra bus Lav 1.1.1 - 2/7/10 - 6 GroupValue_Write 5.001 percentage (0…100%) $02 | 0,8%

i tried with buttons: - but since the all have the same group adress, they cannot co-excist due to the unique ID thing in HA. So i would need something else i think.

4

Buttons use {group_address}_{payload} as unique id, so yes they can coexist.

Where do you read this from? Looks like ETS, but you mentioned that you don’t have the project file …
It seems that the DPT there is just set wrong - which doesn’t really matter except for readability.

5

I do read it via ETS. I dont have the ETS file, but i can still monitor the bus via an IP interface… Maybe the DPT is set wrong. So you think it is a scene?

6

Maybe - without the file you can’t know. It’s definitely some 1byte unsigned int. In the end it doesn’t matter, except for you can use it as such when configuring your entities.

7

Well, a little trial on error here, and it turns out that it is scenes. So summer is scene 1, winter is scene 2 and system stop is scene 3.

Now i just need to find a nice way of controlling it. Experimenting with mushroom chips - but is there a drop down menu kind of thing that can be used also? i am experimenting with colors and logos like this:

{% if is_state(‘sensor.summer_winter_stop_sensor’,‘1’) %}
mdi:snowflake
{% endif %}

{% if is_state(‘sensor.summer_winter_stop_sensor’,‘2’) %}
mdi:sun-clock
{% endif %}

{% if is_state(‘sensor.summer_winter_stop_sensor’,‘3’) %}
mdi:stop
{% endif %}

{% if is_state(‘sensor.summer_winter_stop_sensor’,‘1’) %}
blue
{% endif %}

{% if is_state(‘sensor.summer_winter_stop_sensor’,‘2’) %}
red
{% endif %}

8

:clap::clap:
Select entity
https://www.home-assistant.io/integrations/knx/#select

9

What am i doing wrong here? it does not get the icon colors… it works on other cards, but not the chips card.

type: custom:mushroom-chips-card
chips:
- type: entity
entity: scene.summer_mode
tap_action:
action: none
hold_action:
action: toggle
double_tap_action:
action: none
icon: mdi:snowflake
icon_color: |+
{% if is_state(‘sensor.summer_winter_stop_sensor’,‘1’) %}
blue
{% endif %}

        content_info: name
        use_entity_picture: false
      - type: entity
        entity: scene.winter_mode
        tap_action:
          action: none
        hold_action:
          action: toggle
        double_tap_action:
          action: none
        icon: mdi:sun-thermometer-outline
        icon_color: |+
          {% if is_state('sensor.summer_winter_stop_sensor','2') %}
          deep-orange
          {% endif %}
        content_info: name
      - type: entity
        entity: scene.stop_system
        tap_action:
          action: none
        hold_action:
          action: toggle
        double_tap_action:
          action: none
        icon: mdi:stop
        icon_color: |+
          {% if is_state('sensor.summer_winter_stop_sensor','3') %}
          red
          {% endif %}
        content_info: name
    alignment: center
10

type: custom:mushroom-chips-card
chips:
- type: entity
entity: scene.summer_mode
tap_action:
action: none
hold_action:
action: toggle
double_tap_action:
action: none
icon: mdi:snowflake
icon_color: |+
{% if is_state(‘sensor.summer_winter_stop_sensor’,‘1’) %}
blue
{% endif %}

        content_info: name
        use_entity_picture: false
      - type: entity
        entity: scene.winter_mode
        tap_action:
          action: none
        hold_action:
          action: toggle
        double_tap_action:
          action: none
        icon: mdi:sun-thermometer-outline
        icon_color: |+
          {% if is_state('sensor.summer_winter_stop_sensor','2') %}
          deep-orange
          {% endif %}
        content_info: name
      - type: entity
        entity: scene.stop_system
        tap_action:
          action: none
        hold_action:
          action: toggle
        double_tap_action:
          action: none
        icon: mdi:stop
        icon_color: |+
          {% if is_state('sensor.summer_winter_stop_sensor','3') %}
          red
          {% endif %}
        content_info: name
    alignment: center