In 2023, Alex Rivera, a hobbyist electronics maker in Madrid, noticed that his Arduino-based projects often overheated during long test runs. The main culprit was restricted airflow around the cooling fan. His fix? Installing perforated filtration and screening sheets as custom fan covers — improving cooling efficiency while keeping dust out.
Perforated metal sheets offer an ideal balance of airflow and protection:
For airflow testing guidelines, see IEEE Transactions on Components, Packaging and Manufacturing Technology and Journal of Electronic Packaging – ASME.
Before the upgrade, Alex’s Arduino fan ran at 70% speed to avoid noise, causing heat buildup. After adding aluminum perforated covers, he was able to run the fan at full speed without dust contamination, dropping CPU temperature by 8°C.
For more on perforated metal applications in electronics, see: Custom Perforated Panels for PCB Cooling.
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Alex’s project shows how perforated filtration and screening sheets can be adapted into Arduino fan covers to enhance cooling, improve airflow, and protect sensitive electronics.
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