10 temperature devices as Child device in a quickapp

[PeterB 0]

I have 10 temperature devices (non zwave but 433 Mhz ). I get the data from a get request. I want to make 1 quickapp where all the devices are programmed as a child device . 

My question is, is it possible to create 10 child devices of the same type (temperature device). If so with what of kind of function can I use the  updateProperty to update the temperature value in HC3?

 

 

[Joep 181]

Yes this is possible. Create a table with all your devices and loop though them to create them. Check

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for great tips.

 

It can be overwhelming when starting into QA coding, so I give you some tips. This is an excerpt from my

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:

 

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To drill it down:

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Says to the HC3 that the childs are created. This gives you the full manual control over the creation of the childs.

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This checks if there are childs in the parent QA. If not (cdevs == 0) then create them, initChildData is a table to define your childs, in my example you see I use the same type in multiple childs:

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After defining the childs a for loop creates the childs 1 by 1:

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If cdevs was not 0 then there are already defined childs. While creating the childs you saved the className to use in a QA variable. This makes it possible to read the classes for already created childs and initialize them:

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The classes are defined at the top of my QA, for example:

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To update the childs you can simply loop though them and update the values:

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Note: 

You can download my

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or reaD other community members their code to learn from.
I hope this sets you in the right direction. Happy coding!

[PeterB 0]

Many thanks for the elaborate answer. I am reasonable new to HC3 and lua but I look in to it and start trying.

Is there a way to test my code without polluting my HC3?

.

 

[Joep 181]

Yes, use the excellent

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from @jgab with ZeroBrane Studio.

To get you up to speed fast

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 😃

[PeterV959 6]

Wow, this is exactly what I am looking for. I do have one question. Your code 

On 4/11/2023 at 7:20 AM, Joep said:

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Deals with the children in an all-or-nothing manner. I tend to be more of a pessimist in my coding so I wonder whether to approach this process as "Create the QuickAppChild only if it doesn't aready exist" and deal with each one when you loop through the list. Perhaps I might even go so far as to remove each child from my list. That way when I'm done initializing my current list, I could delete any QuickApChild which hasn't been properly initialized. I fear I might either add more children later or maybe delete the need for one and not remember to clean up after myself.

 

I also want to say I looked around your site and found a wealth of other good material. I didn't subscribe to your newsletter. It would just get lost in all my email clutter and ignored.

 

Thanks!

 

Peter

[jgab 1,950]

This is the easiest way to create children

Put the library in a separate QA file. It defines a new QuickAppChild class that's named QwickAppChild

It handles creation and removing of children automatically depending on the table given to self:initChildren(table)
The trick is that all children should be given a unique identifier so we know if they already exists or are missing.

In the example, it's the key in the child definition table. Ex. "Child_Temps1" for the first child.

 

 

Edited June 19, 2023 by jgab