Tag Archives: USB

Cool USB voltmeter/ammeter

It’s a sweet little gadget, good for measuring the USB port supply voltage and current being consumed by things plugged into the USB port (like my new Winbook TW700).

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Even better, the price including delivery via China Post was about $3.50.

With this nifty gadget, I now know that my the Winbook (when on but completely charged) is pulling about 0.41 A.

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I checked it with a load built out of 1% resistors and it seems pretty darned close. This should be in everyone’s toolbox.