Create automation for randomize switch output

[twproject]

Hi all,
i bought a HLK-SW16 relay module and i configured it into HA.

I want to create two automation/script to start a loop where
an automation turn on one of 8 relay for 5 seconds in a random selection.
an automation that rotate between 64 combination of on/off state (2^8 possibilities) for 5 seconds

From HA i will decide manually with a switch when start the automation

Someone have done something of similar or give me an hints to start?

Thanks

[tom_l]

There’s some information on using the random method here that might help you:

Random Light Schedule

Hello. Is there a way to create a random light schedule for say, when you are on holiday. I have so far 5 Philips hue lights named - light.dining_room_light - light.bedroom_light - light.living_room_light - light.hall_light - light.landing_light and was wondering if it was possible to have say 2 or 3 on for 60-90 minutes then switch to another random set etc. Or am I just trying to take things a tad too far ?? Cheers Mark

[petro]

How’s the relay represented in HA? To turn on one of the 64 combinations, what do you have to pass to the relay?

[twproject]

The entity is entity_id: switch.relay1_0

For every combination I need to power on or off every relay

[petro]

try this

  trigger:
    platform: time_pattern
    # You can also match on interval. This will match every 5 minutes
    minutes: '/5'
  action:
    - service: switch.turn_on
      data_template:
        entity_id: >
          {%- macro getrelays() %}
          {%- set relay = 'switch.relay1_' %}
          {%- set flags = '{:08b}'.format(range(256) | random) | list %}
          {%- for i in range(flags | length) %}
          {{- relay+'{} '.format(i) if flags[i] == '1' else '' }}
          {%- endfor %}
          {%- endmacro %}
          {{ getrelays().strip().split(' ') | join(', ') }}

Then just turn on and off this automation.

EDIT: I Just realized yours goes all the way to 8 from 0… that would be more than 64 combos. That’s 511 combinations… so you’d want to change this line to account for that.

          {%- set flags = '{:09b}'.format(range(511) | random) | list %}
                              ^                 ^

EDIT2: I made a simple one where you just change the inputs

  trigger:
    platform: time_pattern
    # You can also match on interval. This will match every 5 minutes
    minutes: '/5'
  action:
    - service: switch.turn_on
      data_template:
        entity_id: >
          {%- set relay_count = 9 %}
          {%- set relay = 'switch.relay1_' %}

          {%- macro getrelays() %}
          {%- set bin = '1' * relay_count %}
          {%- set rng = bin | int(bin, 2) %}
          {%- set fmat = '{'+':0{}b'.format(relay_count)+'}' %}
          {%- set flags = fmat.format(range(rng) | random) | list %}
          {%- for i in range(flags | length) %}
          {{- relay+'{} '.format(i) if flags[i] == '1' else '' }}
          {%- endfor %}
          {%- endmacro %}
          {{ getrelays().strip().split(' ') | join(', ') }}