isolation - Delphijustin industries https://delphijustin.biz Making use out of things! Fri, 21 Apr 2023 20:29:50 +0000 en-US hourly 1 https://wordpress.org/?v=6.2.9 https://delphijustin.biz/wp-content/uploads/2025/10/cropped-dongwa-192-32x32.png isolation - Delphijustin industries https://delphijustin.biz 32 32 USB Null Power Supply https://delphijustin.biz/usb-null-power-supply/?utm_source=rss&utm_medium=rss&utm_campaign=usb-null-power-supply https://delphijustin.biz/usb-null-power-supply/#respond Fri, 21 Apr 2023 20:24:41 +0000 https://delphijustin.biz/?p=4669 One time I read an Nuts and volts article where this guy took a usb cord and unhooked the +5v(red wire) and made it where the arduino can be powered by an external power supply without breaking anything.. This can be also handy for power hungry devices(such as external dvd burners,etc). This will draw nothing …

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The post USB Null Power Supply first appeared on Delphijustin industries.

]]> One time I read an Nuts and volts article where this guy took a usb cord and unhooked the +5v(red wire) and made it where the arduino can be powered by an external power supply without breaking anything.. This can be also handy for power hungry devices(such as external dvd burners,etc). This will draw nothing on the computer.

Schematic Diagram Left side is the computer Right side is the USB device

Parts list

1x USB Extension Cord

cheap heatshrink assortment

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