Custom timer

Configuration
1

I need a way to display a countdown timer inside a card on a page.
I know it can be done via scripts/automations but I need to be able to change the value and start the timer directly from the card (without updating the automation/scripts every single time)
Is it possible?

2 
- platform: template
  sensors:
    master_bed_time_remaining:
      friendly_name: 'Time Remaining'
      entity_id:
        - input_number.master_bed_blanket_run_time
        - sensor.time
        - switch.electric_blanket
      value_template: >
        {% if is_state('switch.electric_blanket', 'on') %}
          {{ [ (states('input_number.master_bed_blanket_run_time')|int - (as_timestamp(now()) - as_timestamp(states.switch.electric_blanket.last_changed))/60)|round(0) ,0 ] | max }}
        {% else %}
          0
        {% endif %}
      unit_of_measurement: "min"

Screenshot_2020-07-28 Overview - Home Assistant

3

Thanks, I assume the Max on time is for setting the countdown timer value? What’s the yaml for that one?

4

That’s this input number:

input_number.master_bed_blanket_run_time

master_bed_blanket_run_time:
  name: Max On Time
  min: 5
  max: 120
  step: 5
  unit_of_measurement: min
  icon: mdi:update
5

Thanks for that, almost have it, I have it setup just like you do but the remaining time is not updating in my entities list (if I drag the slider above it does actually update, weird)

image

Here is what I have, maybe you can spot something wrong:

printer_run_time:
  name: Printing Time
  min: 5
  max: 300
  step: 5
  unit_of_measurement: min
  icon: mdi:update

And:

- platform: template
  sensors:
    print_time_remaining:
      friendly_name: 'Time Remaining'
      entity_id:
        - input_number.printer_run_time
        - sensor.time
        - switch.smart_plug_mss310_main_channel
      value_template: >
        {% if is_state('switch.smart_plug_mss310_main_channel', 'on') %}
          {{ [ (states('input_number.printer_run_time')|int - (as_timestamp(now()) - as_timestamp(states.switch.smart_plug_mss310_main_channel.last_changed))/60)|round(0) ,0 ] | max }}
        {% else %}
          0
        {% endif %}
      unit_of_measurement: "min"
6

Have you defined sensor.time in your configuration? It’s part of the Time&Date integration.

7

Yup that was it thanks, it was in unavailable state for some reason, restarted HA and works fine now :slight_smile:

8

You’re welcome but you should mark tom_I’s post as the Solution. That’s the one that actually provides an answer to your request for a custom timer.

1 Like
9

Yeah marked the correct one now :slight_smile:
I was wondering, is it also possible that instead the switch on/off state to reset the timer, to have it reset when the slider is moved?

10

Sorry for the stupid question (just started with HA this week!)
Where do I put this code? I’ve tried in the configuration.yaml but it doesn’t like it? Am I missing the section to put the - platform:template into - or do I need to install and integration?