# Powering Navigation Board through GPIO causing continuous noise

**URL:** <https://discuss.bluerobotics.com/t/powering-navigation-board-through-gpio-causing-continuous-noise/18875>\
**Category:** ArduSub\
**Created:** [December 18, 2024, 3:16am UTC](https://discuss.bluerobotics.com/t/powering-navigation-board-through-gpio-causing-continuous-noise/18875 "2024-12-18T03:16:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![chickwensrule](https://avatars.discourse-cdn.com/v4/letter/c/a183cd/32.png) [@chickwensrule](https://discuss.bluerobotics.com/u/chickwensrule)\
**Post date:** [December 18, 2024, 3:16am UTC](https://discuss.bluerobotics.com/t/powering-navigation-board-through-gpio-causing-continuous-noise/18875/1 "2024-12-18T03:16:08Z")

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When powering a Raspberry Pi with a Navigator Board using the Blue Robotics 5V 6A power supply, it starts off by making a really loud, continuous noise. After some time, it becomes really quiet but is still present. This only seems to be happening when powering through GPIO, and I run into no issues with USBC.

Nothing else is connected, it’s just the Raspberry Pi, the Navigator Board, and the power supply (14.6V → 5V).

Does anyone know how I could diagnose and solve this issue?

Thank you!

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**Author:** ![chickwensrule](https://avatars.discourse-cdn.com/v4/letter/c/a183cd/32.png) [@chickwensrule](https://discuss.bluerobotics.com/u/chickwensrule)\
**Post date:** [December 18, 2024, 3:38am UTC](https://discuss.bluerobotics.com/t/powering-navigation-board-through-gpio-causing-continuous-noise/18875/2 "2024-12-18T03:38:41Z")

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When reloading blueos.local and downloading extensions (putting the Pi under load), the volume of the sound increases again, but am not sure what this means or if I should be concerned.