Show values which are only temporary available (printer toner status)

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1

Hello,

i have a question, maybe someone of you already have implemented this?
I have a laser printer which is discovered by HA automatically by the IPP integration.
It shows me the toner status - but only when the printer is turned on (which is quite seldom used).
So mainly it shows “unavailable” as values.

I would like to show the last known value (e.g. 15%) in lovelace and ignore any “unavailable”.
Anyone of you already solved this or can give me a hint how to do this?

Thanks in advance,
/ Ralf

2

I have the same situation with my inkjet printer. I intend to try using the saver custom component ( https://github.com/PiotrMachowski/Home-Assistant-custom-components-Saver ) to capture the state when connected, but it hasn’t got to the top of my list yet :slight_smile: Hopefully someone else will have made a bit more progress and help us both :slight_smile:

3

Hello, I also had the same request for my printer and here is how I did:

  1. Add custom fields in configuration.yaml for each of the values you want to save:
    image
  2. Create an automation that update those fields each time the printer is online:
  • Trigger type: State
  • Entity: Your printer
  • Condition type: Template
  • Template content:
{{ trigger.to_state.state not in [trigger.from_state.state, 'unavailable'] }}
  • Action type: Call a service
  • Service: input_text.set_value
  • Entity id: input_text.printer_black_left (create an action for each of your custom fields)
  1. Now you can use your custom fields in a lovelace card to display the last known values of your printer
4 Likes
4

Tried that using mqtt but still having the problem, that after HA restarts, the values are shown as ‘unavailable’?
What i am doing wrong, maybe someone can give me a hint, thanks a lot in advance!

Config as following:


sensor:        
  - platform: mqtt
    state_topic: "printer/black"
    name: "Schwarz"
    icon: mdi:water
    unit_of_measurement: '%'

automation:
  - alias: printerink_black_2mqtt
    initial_state: true   
    trigger: 
      - platform: state
        entity_id: sensor.samsung_c48x_series_black_toner_s_n_crum_17020338859
    condition:
      condition: template
      value_template: >-
        {{ trigger.to_state.state not in ['unavailable', trigger.from_state.state] }}
    action:
      service: mqtt.publish
      data_template:
        topic: "printer/black"
        payload: "{{ trigger.to_state.state }}"
5

I’m using mqtt for this as well. I only publish the ink level when the printer is online so I don’t have the problem that the state is “unavailable” after a restart.

sensor:
  - platform: mqtt
    name: "Patrone Schwarz"
    unit_of_measurement: '%'
    state_topic: "printer/black"

automation:
  - alias: 'Drucker - Patrone Schwarz'
    trigger:
      - platform: state
        entity_id: sensor.ink_level_black
    condition:
      - condition: state
        entity_id: device_tracker.epsondrucker
        state: 'home'
    action:
      - service: mqtt.publish
        data_template:
          topic: printer/black
          retain: true
          payload: '{{ states("sensor.ink_level_black") }}'
6

@dennis84de great idea!
Can you please post your config to discover the printer?

Thanks!

7

I use the fritzbox integration for this.

But you can use every decivce tracker for this.

8

As far as i know, FritzBox has been moved towards an integration?
I also have FritzBox, so just add it like in the example docs?
Will try…

9

The device tracker is configured in yaml for now.
The integration in the UI is for switches and thermostats.

device_tracker:
  - platform: fritz
    host: !secret fritzbox_host
    username: !secret fritzbox_username
    password: !secret fritzbox_password
    interval_seconds: 5
    consider_home: 60
    new_device_defaults:
      track_new_devices: false
10

Great idea man!!! Love it.
I tried to set it up in my env. However, it seems that my automation is not working.
I have the input fields setup, I have the automation setup as follows:

- id: '1596010583695'
  alias: Update Printer Ink Levels
  description: ''
  trigger:
  - entity_id: sensor.canon_mx720_multifunctional
    from: unavailable
    platform: state
    to: idle
  condition:
  - condition: template
    value_template: '{{ states.sensor.canon_mx720_multifunctional.state not in [states.sensor.canon_mx720_multifunctional.state,
      ''unavailable'']}}'
  action:
  - data:
      entity_id: input_text.printer_black_left
    entity_id: input_text.printer_black_left
    service: input_number.set_value
  - data:
      entity_id: input_text.printer_cyan_left
    entity_id: input_text.printer_cyan_left
    service: input_number.set_value
  - data:
      entity_id: input_text.printer_magenta_left
    entity_id: input_text.printer_magenta_left
    service: input_number.set_value
  - data:
      entity_id: input_text.printer_yellow_left
    entity_id: input_text.printer_yellow_left
    service: input_number.set_value
  mode: single

However, when I turn on the printer and becomes available - changes the state from unavailable to idle, the debug gives me this error:

Logger: homeassistant.components.automation
Source: core.py:1235
Integration: Automation (documentation, issues)
First occurred: 11:33:06 AM (1 occurrences)
Last logged: 11:33:06 AM

While executing automation automation.update_printer_ink_levels
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/automation/__init__.py", line 409, in async_trigger
    await self.action_script.async_run(variables, trigger_context)
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 790, in async_run
    await asyncio.shield(run.async_run())
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 185, in async_run
    await self._async_step(log_exceptions=False)
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 193, in _async_step
    await getattr(
  File "/usr/src/homeassistant/homeassistant/helpers/script.py", line 382, in _async_call_service_step
    await service_task
  File "/usr/src/homeassistant/homeassistant/core.py", line 1235, in async_call
    processed_data = handler.schema(service_data)
  File "/usr/local/lib/python3.8/site-packages/voluptuous/validators.py", line 208, in __call__
    return self._exec((Schema(val) for val in self.validators), v)
  File "/usr/local/lib/python3.8/site-packages/voluptuous/validators.py", line 287, in _exec
    raise e if self.msg is None else AllInvalid(self.msg, path=path)
  File "/usr/local/lib/python3.8/site-packages/voluptuous/validators.py", line 283, in _exec
    v = func(v)
  File "/usr/local/lib/python3.8/site-packages/voluptuous/schema_builder.py", line 272, in __call__
    return self._compiled([], data)
  File "/usr/local/lib/python3.8/site-packages/voluptuous/schema_builder.py", line 817, in validate_callable
    return schema(data)
  File "/usr/local/lib/python3.8/site-packages/voluptuous/schema_builder.py", line 272, in __call__
    return self._compiled([], data)
  File "/usr/local/lib/python3.8/site-packages/voluptuous/schema_builder.py", line 594, in validate_dict
    return base_validate(path, iteritems(data), out)
  File "/usr/local/lib/python3.8/site-packages/voluptuous/schema_builder.py", line 432, in validate_mapping
    raise er.MultipleInvalid(errors)
voluptuous.error.MultipleInvalid: required key not provided @ data['value']

I do not know to what data[‘value’] it’s referring to.

Any ideas? and thank you very much.

11

Your action section needs to look a bit more like this:

  action:
  - data_template:
      value: '{{ states(''sensor.hp_photosmart_5520_series_black_ink'') }}'
    entity_id: input_text.printer_black_left
    service: input_text.set_value
  - data_template:
      value: '{{ states(''sensor.hp_photosmart_5520_series_cyan_ink'') }}'
    entity_id: input_text.printer_cyan_left
    service: input_text.set_value
  - data_template:
      value: '{{ states(''sensor.hp_photosmart_5520_series_magenta_ink'') }}'
    entity_id: input_text.printer_magenta_left
    service: input_text.set_value
  - data_template:
      value: '{{ states(''sensor.hp_photosmart_5520_series_yellow_ink'') }}'
    entity_id: input_text.printer_yellow_left
    service: input_text.set_value
  mode: single
12

Awesome, I did the modifications and now it works perfectly. Thank you very much.