Add local logic to connect inputs to outputs without relying on external control about mqtt-io HOT 5 OPEN

I was thinking about this too and would a halfway point be the ability to execute a script locally? So say the correct message comes in on a mqtt topic, and it responds by running a script with a set of parameters?

In a script the user can make it as advanced or as simple as they like.

Does that open any security concerns?

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Hi Sudhansu,

I wrote a whole explanation as to why I don't want to include this in this project, but the more I think about it, the more I'm leaning towards thinking it's a good idea.

Pros:

• No reliance on any external service to handle simple local logic
• More responsive

Cons:

• Configuration/documentation complication
• Distributed logic - it's much simpler to keep all automation logic to one place (OpenHAB, Home Assistant etc.) so it's easier to debug

Things to think about:

• Push to toggle vs direct mapping - do you want to toggle the output on each button press or when the button is off, the output should be off?

Can you think of any other pros/cons/thoughts?

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Hi Ellis
Thanks for having a detailed thought about the feature. I understand that implementation will have its complication.

You have listed the pros/cons correctly and I can't think of any additional ones. I believe the primary advantage is with this, the PI module will become a self contained unit and with a small footprint of PI zero/ZeroW, it can be setup as an add-on to the existing controls.

The button behavior can be configurable as it depends on the type of button used.

1. Follow the switch (0 for OFF, 1 for ON)
2. Inverse of the switch (1 for OFF, 0 for ON)
3. Toggle (change the state from ON to OFF and vice versa)
   This will be inline with the existing functionalities implemented using the inverse and toggle functionality. I am using a push button momentary switch and expect the toggle behavior.

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Was there any change on this ? I too am looking to be able to tie an input to an output or multiple outputs, it would be great for simplicity and avoid home assistant clutter

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