# Processing + Arduino

**URL:** https://discourse.processing.org/t/processing-arduino/36295
**Category:** Electronics (Arduino, etc.)
**Created:** [April 12, 2022, 10:25am UTC](https://discourse.processing.org/t/processing-arduino/36295 "2022-04-12T10:25:38Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![Chrisir](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/chrisir/32/45_2.png) [@Chrisir](https://discourse.processing.org/u/Chrisir)
#### Post date: [April 12, 2022, 10:57am UTC](https://discourse.processing.org/t/processing-arduino/36295/2 "2022-04-12T10:57:18Z")

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check this out

> [@Issue with reading Arduino Port](https://discourse.processing.org/t/issue-with-reading-arduino-port/7846/14):
>
> and when you test your second processing code ( what also is a firmata code ) you changed arduino also from your sketch to firmata? when your processing gives you a 0.0, did you measure voltage at that arduino pin? //\_\_\_\_\_\_\_\_\_\_\_\_ anyhow i try to play with your "second code " and yes, i got 0 too!! now that was bad, as i just loaded firmata test my sketch and connect A0 to 5V and all ok test your sketch and it did not work… so i play until i see something, it was the baud rate !…

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