# Processing and Arduino: how to change color according to the status of a digital input?

**URL:** https://discourse.processing.org/t/processing-and-arduino-how-to-change-color-according-to-the-status-of-a-digital-input/37579
**Category:** Electronics (Arduino, etc.)
**Created:** [June 16, 2022, 2:13pm UTC](https://discourse.processing.org/t/processing-and-arduino-how-to-change-color-according-to-the-status-of-a-digital-input/37579 "2022-06-16T14:13:14Z")
**Posts on this page:** 1
**Showing post:** 4

<div class="post-metadata">

### 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: [June 16, 2022, 5:27pm UTC](https://discourse.processing.org/t/processing-and-arduino-how-to-change-color-according-to-the-status-of-a-digital-input/37579/4 "2022-06-16T17:27:51Z")

</div>

Hello,

If you are exploring the examples that come with the Processing IDE 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 …

`:)`

---

_[View the full topic](https://discourse.processing.org/t/processing-and-arduino-how-to-change-color-according-to-the-status-of-a-digital-input/37579)._