Hi guys today i gonna show how to make simple ,but useless USB light!

Step 1: Make Sure You Have Everything!

Step 2: Solder Like Showed in Picture.

Step 3: Take Your Tape , and Isolate Wires.

Step 4: Just Insert Into a Tube.

Step 5: Light It Up !!

If you liked press heart ! Also if you have questions write in comments ! DONT FORGET TO VOTE !

<p>good job </p>
<p>I made it....it's my first intructable and it was very good to make it.</p><p>Thanks.</p>
<p>Nice! </p>
<p>I'm glad you like it.</p>
What resistor do I need?
<p>200 omh</p>
<p>For a white LED, the voltage drop is in the interval 3.4V to 3.6V, leaving 1.4V to 1.6V for the resistor. For 20mA, this gives a resistor of 70 to 80 <strong>Ohm. </strong>The nearest larger standard resistor in E-12 row is 82 Ohm which will give 17.0mA to 19.5mA.</p><p>For 200 Ohm, you need to use E-24 resistors (usually costs more), you'll get only 7mA to 8mA and hence much less light.</p><p>Other than that, it's nice for a little light on the keyboard, if you're sitting in the dark - I have made one that goes on top of my screen, and with a shade made of aluminum foil from a single use cake form :)</p>
<p>It depends on the LED power.</p>

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