Make LED strip USB powered ?

H

HE-MAN

Disciple
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n1r0 said:
It should, LEDs don't need a lot of power. But for the same cost why not buy a 12V adapter?
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Want to use it as backlight for monitor, USB powered will be more convenient, since monitors have usb ports, so it will on/off automatically with the monitor.
 
HE-MAN said:
I bought it. Anyway to make it usb powered?
Found this https://robu.in/product/5v-1a-usb-booster-cable-dc-5-52-1mm，12v/
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Since this is a Boost converter, and a USB output is typically only 5V, it could generate a lot of heat. Moreover, the USB port at the back of the Monitor is part of a Data Hub. Not necessarily meant for raw power delivery.
A dedicated 12V supply or a 5V USB LED strip would be safe options.
Do not risk damaging your monitor by drawing power from its USB, then boosting it to 12V.
This seems like an option:
 
That boost converter needs 1A of current to work correctly. Even if you have USB port on PC or monitor that can source 1A it won't work, because that boost converter is not a proper USB device and can not follow the usb Enumeration process, one of it's part is current requirement negotiation. When the request is granted by the host only then the usb port can supply more than 100mA.

However it will work just fine when connected to 5v phone usb chargers or powerbanks.
 
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