Repetitive task for test bench - "for loop?"

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#1

Hi!
My name is Jose and i am very noob using Home Assistant.
I am designing a work bech to help me test home apliance in home and i need help.

I am using some smart relays that have current meassurment. I connected one to Home Assistant to test it and worked, i can change the state of the relay and see the current in the dash board.

Now i need help to create the automation. The problem is that i dont know if i should use “Script” or “Automations” or what… i am quite confused about all the tools abaible and dont know how to even search what i need.

My idea is to have 4 relays that are 10 minutes ON, and then 1 minute OFF (for example) y the time ON i will log the current and then export it to a “cvs” or whatever, but i need to run this task for hours, even days.

In programming its simple i use a for loop and then delays or whatever, but i cant get around how to do this in home assistant.

I read about scripts, automations, blueprints, timers (helpers) and more and cant figure it out how to do it.

Can someone tell me where to start?

Thanks!

#2

You can do it with an automation.

trigger:
  - id: 'turn_off'
    platform: state
    entity_id: switch.your_relay
    to: 'on'
    for:
      minutes: 10
  - id: 'turn_on'
    platform: state
    entity_id: switch.your_relay
    to: 'off'
    for:
      minutes: 1
action:
  - service: "switch.{{ trigger_id }}"
    target:
      entity_id: switch.your_relay
2 Likes
#3

One typo in an otherwise wonderfully-elegant automation:

  - service: "switch.{{ trigger.id }}"

You could create a toggle helper (input_boolean) to provide a switch turn the automation on and off from the UI dashboard:

trigger:
  - id: 'turn_off'
    platform: state
    entity_id: switch.your_relay
    to: 'on'
    for:
      minutes: 10
  - id: 'turn_on'
    platform: state
    entity_id: switch.your_relay
    to: 'off'
    for:
      minutes: 1
  - id: 'toggle'
    platform: state
    entity_id: input_boolean.run_cycle
    to: 'on'
condition:
  - condition: state
    entity_id: input_boolean.run_cycle
    state: 'on'
action:
  - service: "switch.{{ trigger.id }}"
    target:
      entity_id: switch.your_relay
2 Likes
#4

Thanks Troon i will search this idea to test it.

If you say automation its the best way i will try it.

For now i use Node-red and a eWelink API for a “quick solution” but the API its quite old, and i dont know why the node red server goes offline quite often when i use more than one device.

Thanks again and i will read the documentation to try to understand how the code that both gave me works.

#5

Thanks tom_I.
If you say automation, i will read and try it.

First i need to understand how to read and code in YAML (that i suppose its the laguage that you wrote).

Again thanks!