Convert State sensor to Binary sensor

Configuration
1

I’m passing the battery state over to HA via MQTT. One of the attributes is the charging status, and to grab this I’m using the following without issues:

- platform: template
  sensors:
    ls_charge_tablet:
      friendly_name: "Tablet Charge State"
      value_template: >-
        {{ states.sensor.tablet_lstablet_ls_battery_sensor.attributes.charging_state }}

This creates a sensor that returns a value of charging / discharging. However, I’d prefer to convert this to a binary sensor if at all possible. This would need to return on/true when the state is ‘charging’ and false/off at other times.

I can’t work out how to do this despite looking at HA docs for binary template sensors. Any assistance would be greatly appreciated.

2

binary_sensor:

- platform: template
  sensors:
    ls_charge_tablet:
      friendly_name: "Tablet Charge State"
      value_template: "{{ state_attr('sensor.tablet_lstablet_ls_battery_sensor', 'charging_state') == 'charging' }}"
1 Like
3

Thanks, that works perfectly.

1 Like
4

I’m trying to do a similar thing with the Android app but getting no data with the following template. Stole the config from my opengarage yaml.

    nokia_charging_state:
      friendly_name: Nokia Charging State
      value_template: '{% if states.sensor.nokia_battery_level %}
            {% if states.sensor.nokia_battery_level.attributes["is_charging"] == "false" %}
              No
            {% elif states.sensor.nokia_battery_level.attributes["is_charging"] == "true" %}
              Yes
            {% endif %}
            {% endif %}'
      icon_template: >
          '{%- if is_state('sensor.nokia_charging_state', 'Yes') -%}mdi:battery-charging-high{% else %}mdi:battery-medium{%- endif -%}'

Can you spot what I’m doing wrong? Sensor reports as true or false in states panel.

5

FYI, I’ve also tried this which reports false even though it should be true.

{% if is_state('states.sensor.nokia_battery_level.attributes.charger_type', 'AC') %} True
{% else %} False
{% endif %}

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6

It’s generally considered bad form to resurrect and old forum thread with a new question. You’ll have much more chance of getting help with your issue if you open a new thread.

7

Thanks. I’ll make sure I do that in the morning.

8

Good advice for next time.

While I’m here I might as well show what I think should work, and what I think you were trying to do:

    nokia_charging_state:
      friendly_name: Nokia Charging State
      entity_id: sensor.nokia_battery_level
      value_template: >
        {% if not states('sensor.nokia_battery_level') == 'undefined' %}
          {% if state_attr('sensor.nokia_battery_level', 'is_charging') %}
            Yes
          {% else %}
            No
          {% endif %}
        {% else %}
          Undefined
        {% endif %}
      icon_template: >
        {% if is_state('sensor.nokia_charging_state', 'Yes') %}
          mdi:battery-charging-high
        {% else %}
          mdi:battery-medium
        {% endif %}
9

Hey thanks for that. No wonder I couldn’t figure it out!! Testing now. Appreciate your input as always.