How to Make Simple LED USB Light





Introduction: How to Make Simple LED USB Light

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 !!

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What resistor do I need?

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 Ohm. The nearest larger standard resistor in E-12 row is 82 Ohm which will give 17.0mA to 19.5mA.

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.

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 :)

It depends on the LED power.