How often an Aux input can be used?

[muhammadelmogy]

I see in the code there is support for Aux Inputs, I want to know what would be the case where I would need an Aux input in the controller.
For Aux outputs, maybe someone will use them to turn on extra stuff using some standard G-code but for Aux input what can I use them for?

[terjeio]

User plugin code, or "standard" plugins such as the one for Bluetooth comms.

[muhammadelmogy]

But there is not major use in the industry for example read some sensors (I am not really expert with CNC machines)
Do they need to be support interrupts?
I want to eliminate any unnecessary pins on the board I am designing so I can have them for other valuable functions !

[terjeio]

Unneccesary pins for one user is vital for another... To make the perfect controller you will need a lot of pins.

The Blueetooth plugin requires an interrupt capable pin as well as an UART port. The plasma plugin needs an analog input and arc ok input etc etc...

[muhammadelmogy]

Unneccesary pins for one user is vital for another... To make the perfect controller you will need a lot of pins.

You are right, no doubts about it, but I am more concerned about CNC routers and Also I am still trying to make use of what I have on hand right now which is stm23f411 chip

[5ocworkshop]

I see in the code there is support for Aux Inputs, I want to know what would be the case where I would need an Aux input in the controller.
For Aux outputs, maybe someone will use them to turn on extra stuff using some standard G-code but for Aux input what can I use them for?

As an example, I use one of the Aux Inputs to connect a simple momentary switch that allows me to over ride my status lights and switch my RGB gantry lights to "white" so I can better inspect my work. So I have an "inspection light" button on my button box for this that uses the Aux Input.

[5ocworkshop]

Another, perhaps more common example, is the "enclosure door". Where you want the machine to respond to the safety door to the enclosure being opened while it is running.