Magic LED Lightbulb




About: We are a group of Engineers, Tinkerers, Designers, Programers, and Nerds ! ---- and Since April 2011 We also have a Cupcake Maker

We dont know if there is a video like this, but we show you how to make a lightbulb that lights up when the base is touched by human skin. The circuit has a transistor that amplifies the electricity that is transfered through the human skin. You will be able to illuminate a room by merly holding the bulb in your hand. A geeky way to light up an area, like in the olden times with a candle :P 




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    5 Discussions


    6 years ago on Introduction

    Hello! I have a question for you. Why those resistors are needed? I tried the circuit without any resistors and the led was brighter. So i just want to understand this thing because i'm a padawan in electronics :).


    9 years ago on Introduction

    Minor Upgrades.

    Solder the circuit board wires to the original solder points of the light bulb base.
    Makes the mod "undetectable"

    Refrost the bulb interior(thinned white paint works OK, other methods might be better). This helps retain the illusion better(the audience only sees the light thrown, not the led inside).

       If you "upgrade" the hack, DON'T store it with the normal light bulbs!!!
       If someone that canot tell screws this into a mains receptacle... POW!
       That destruction can be fun in it's own right, but let's the "magic smoke" out, and the trick won't work anymore.

    2 replies

    Thanx We tried the resoldering of the bulb but failed we couldnt get our solder to stick.

    And ont he Refrost we need to try that too. Thank you for the advice.

    Resoldering... tricky. It was probably a solder mis-match(lead solder on the bulb, lead-free on your iron?  I've done this once or twice, mainly, I just fluxed the wire and solder, and re-melted the blob already on there. no need to add any more.

    Keep up the good work, and post some after-images, if you get the frosting to work ;-)