# Why does Processing send so many signals at once?

**URL:** <https://discourse.processing.org/t/why-does-processing-send-so-many-signals-at-once/31420>\
**Category:** Electronics (Arduino, etc.)\
**Tags:** homework\
**Created:** [July 24, 2021, 10:43am UTC](https://discourse.processing.org/t/why-does-processing-send-so-many-signals-at-once/31420 "2021-07-24T10:43:38Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![glv](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/glv/32/18785_2.png) [@glv](https://discourse.processing.org/u/glv)\
**Post date:** [July 24, 2021, 11:28am UTC](https://discourse.processing.org/t/why-does-processing-send-so-many-signals-at-once/31420/2 "2021-07-24T11:28:35Z")

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Hello,

Welcome aboard!

Take a look at this topic:

> [@Processing to Arduino Serial Library Example](https://discourse.processing.org/t/processing-to-arduino-serial-library-example/11143/5):
>
> I modified the existing “SimpleWrite” example to: save and check for the state of mouseOverRect() print state to console only writes serial data once a delay() to wait for Arduino to reset once connected to it; in my case, it is an Arduino Mega 2560 R3. I kept the spirit of the original example intact and left it as a “Simple Write” program. My edit of “SimpleWrite” example so it only sends data once: /\*\* \* Simple Write. \* \* Check if the mouse is over a rectangle and writes the status …

If you are using the Processing environment you can also use:  
[https://processing.org/reference/println\_.html](https://processing.org/reference/println_.html)

It can be very useful for examining and debugging code.  
Only use it only when needed! It can slows things down.

Example:

```auto
int counter;

void setup() 
	{
  frameRate(1); //Slows things down for this example
  println("Setup: ", counter, frameCount);
	}

void draw() 
  {
  background(0);
  println("Draw: ", counter, frameCount);
  counter++;
  }

```

`:)`

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