I'm newbie. I made a mini LED lamp. First I soldered the resistor to the LED (preferably white) and then soldered the USB wires to the LED. I have given the diagram on how to solder the LED and the wires. Fill the blood test tube with any color dish-washing liquid you like and then with the help of a knife or a flat screw-driver take out the rubber from the cap of the test tube. Then cut the rubber in half as I showed in the video and fit the LED in the rubber's small hole and then put it back in the cap of that test tube. After it's all in place and tightly fixed in the cap then apply some glue on the top of exposed wiring and make sure it's nicely in place. Then fill the test tube with the dish-washing liquid and if you want more tiny air bubbles then you can do that with a syringe then keep it aside for awhile. Make sure your glue gun is heated by now and then take the test tube and apply a lot of glue on the tip of the test tube then quickly fit the cap of the test tube and hold it for awhile so the it's secured and nothing leaks out. After the glue cools down tie some cable ties so it's tight and the cap doesn't slip.Let me know what do you think of it and don't forget to comment and rate. Cut off the excess glue and the dish-washing liquid. Hook it up and it light's up ! looks good in dark and with many tiny air bubbles.You can even cover the the cap with foil or just paint it black so the light doesn't escape. You can even use a 3v button cell batteries or connect ...
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