# Processing + OSC + Arduino: Application Freezes When Controlling Fan

**URL:** <https://discourse.processing.org/t/processing-osc-arduino-application-freezes-when-controlling-fan/47568>\
**Category:** Electronics (Arduino, etc.)\
**Created:** [November 26, 2025, 9:16am UTC](https://discourse.processing.org/t/processing-osc-arduino-application-freezes-when-controlling-fan/47568 "2025-11-26T09:16:33Z")\
**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:** [November 26, 2025, 4:29pm UTC](https://discourse.processing.org/t/processing-osc-arduino-application-freezes-when-controlling-fan/47568/2 "2025-11-26T16:29:19Z")

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Hello @brightscape,

Have you tested the setup with the fan disconnected?  
Electrical noise or power fluctuations from the fan can interfere with the microcontroller and cause communication problems.

The guidelines here are helpful:  
_[Welcome to the Processing Foundation Discourse](https://discourse.processing.org/t/welcome-to-the-processing-foundation-discourse/8)_

`:)`

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