HOW TO FIND OUT WHICH WIRE HAS POWER IN a USB CABLE

by GregoriNiculitcheff in Circuits > Computers

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HOW TO FIND OUT WHICH WIRE HAS POWER IN a USB CABLE

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I checked it out @ Techshop

Quick answer: RED and BLACK

First, You Will Need to Find an Used USB Cable, a Multimeter and a X-acto Blade.

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(You can't see but the red and black wires are already peeled, may be someone tried before me to extract power from this cable)

Then You Need to Peel the Wires

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Connect Your USB Cable to a Computer

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With the Multimeter Start to Hunt for Which Pair of Wires Measures Around 5V.

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It Is ... the BLACK and RED Pair

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Now Go Find a USB Female Port

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Cannibalize the Circuit

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Take Out the Plug

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Fit the female plug into your power source

(the USB cable has 4 wires, and in this case the 2 outside wires were the power ones)

Weld and Isolate Everything Together

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And Done :) This Was Done at Techshop

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Techshop