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how can i power my 3 AAA led flashlight with USB? Answered

i want to power my 3 AAA led flashlight from a usb?
thanks.

Tags:usb

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user
Re-design (author)2010-05-16

The outside pins are +5 and ground.  Use a meter to determine which is which if you need polarity.  Or look at this pinout if you want to know them all.

The usb port is only good for about half an amp or less so don't use too much or you'll run the risk of loosing your usb port and maybe your motherboard.

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user
steveastrouk (author)Re-design2010-05-16

100mA, except by negotiation.

Steve

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user
iamsinned06 (author)steveastrouk2010-05-27

this is the flashlight i want to make it a usb flashligt.


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user
iamsinned06 (author)iamsinned062010-05-27

it uses 3 AAA battery. so it's 4.5v?
how can i plug it to usb port in my laptop to use it as flash light or a stand light?

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steveastrouk (author)iamsinned062010-05-27

MEasure the current the thing draws then.

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