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 i was messing with some leds the other day when i found that it would be brilliant to not worry about wasting the batteries using a led so i made this

Step 1: Things You Will Need

 scissoirs
pliers
soldering iron
knife
solder
e-tape

820 ohm resistor(grey,red,brown)
LED
usb lead(male)

Step 2: Cut Em Short

 cut the led and resistor legs short. make sure you know which is positive and negative on the led!

Step 3: Solder

 solder the resistor to the positive leg of the led.

Step 4: Kill the Usbted

 cut and slice and get frustrated with the usb until it comes open then strip the black and red wires and cut the others off.

Step 5: Solder 2f the Led

 solder the resistor to the red and the negative of the led to the black.

Step 6: Wrappin'

wrap the whole thing in tape apart from part of the usb and the led

Step 7: All Done

 plug in and bing! zap! pretty light 
<p>Quite ugly but working.</p><p>I also would rather make a &quot;snake&quot; and for this good powersource more than one LED in parallel.</p>
<p>You don't need to slice open the plug, just attach the LED and resistor to the Red/Black (or whatever colours the maker of said cable had that week) wires, and you have a &quot;snake&quot; light! But otherwise, nice 'ible, dude!</p>
You realize a usb led is almost completely pointless. If you were to use it to test potentially broken usb ports it would have a small amount of (Insert clever synonym for usefulness here).
Pointless? No. My desk is covered with small hand tools and parts that can be played with via 5V ~500mA. Great way to build stuff without having to worry about the weight batteries introduce.<br /> <br /> But while we're talking USB this page:&nbsp;<a href="http://pinouts.ru/Slots/USB_pinout.shtml" rel="nofollow">pinouts.ru/Slots/USB_pinout.shtml</a><br /> <br /> &quot;... short the 2 data lines together. The device will then not attempt to transmit or&nbsp;receive&nbsp;data. but can draw up to 1.8A if the supply can provide it.&quot;<br />
USB port are 5V 100 mA only!!
Why, good sir, one could use 12V cigarlighter-&gt;5V usb-converter when testing simple gadgets not requiring computer thus avoiding those grievious accidents.
nifty for a guide light for plugging things into the back of a desktop =)<br />
what is e-tape?
E-tape (electrical tape) is usually black, but you can get it in a rainbow of colors. You can buy it at Wal-Mart, Radio Shack or even a dollar store.
ohhhh, you mean the black electrical tape, usually made of PVC?
&nbsp;Wow, this was actually a neat simple instruct.<br /> <br /> Good job. I needed a flashlight attachment for my laptop when the power goes out and I think this should work.<br />
&nbsp;its my first instructable so its not the best ever but at least you can see whats happening in the photos. im making soon a soldering workstation out of a old&nbsp;school desk you know the ones that you open up and put stuff in&nbsp;
Good concept, decent execution, but...<br /> <br /> https://www.instructables.com/id/Macro-Photography-An-Essential-Skill-for-Good-Ins/<br />
Agreed <br />
I&nbsp;post that link a lot...it should be required reading at the 'please title your new instructable' screen.<br />

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