How to Make a Homemade LED Flashlight

We present you a manual to make a homemade LED flashlight, with which can replace traditional light from a flashlight by LEDs of low consumption, a good idea to have a homemade hand lamp. Let us remember that the great advantage of using this type of lamps is their lower consumption and greater life to traditional and even the low consumption.

How to make a homemade Lantern

For this purpose will have to follow the following steps:

First of all, must keep in mind that depending on the design of the lamp that we use, the coupling end may vary and we must find out first how the flashlight is made to be able to begin to put his hand. So I get to work and dismantle all parts of the flashlight as we can see in the following images:

As we can see, there is nothing of this world. In this case, this Lantern uses a small stand lamp which, in turn, plays against a few copper plates making contact with batteries using a switch on the top. You can also see that there is a small notch that we must withdraw in order to make the reflector, which is made of plastic. This will come us well later when we acoplemos the final assembly within this same site.

First we have done some tests on a Breadboard riding a few LEDs and food with 3 volts. All diodes are mounted in parallel and apparently everything is OK and we appreciate an intense white light.

We have made a small printed circuit board to accommodate 52 diodes, which esplicamos in our previous tutorial how to make a PCB Board which you can visit as a reference. Weld everything must be perfect, I tend to use paste FLUX. Although mount and solder all the diodes is not complicated at all, has a good time doing it, so patience.

Once soldiers all the LEDs, we have a nice round plate ready for operation. We’ve also welded a couple of cables with their respective colors (red and black) to take power from the batteries. We also see that plate enters perfectly in front of the flashlight, as you can see in this image.

Well, now comes the “slightly more difficult” which is to couple the set in order to properly close the Lantern (which is water resistant and thread) and also take the current from the batteries. The first thing we had to do is to cut a piece of the reflector plate together with the didos LED is thicker and occupied us plenty of space without being able to close the flashlight. We mark a little eye with a felt pen and then cojemos duestra dremel (or similar) to make a cut as clean as possible:

Now we have the whole well positioned and allow close it without problem. That we lack? Since taking power from the batteries.

We decided to dismantle the original bulb and use their contacts to weld the plate supply wires. Carefully withdraw the part of Crystal and terminals cleaned.

We take the hole in the reflector to spend wires to the bulb holder and soldered with Tin.

Once all the steps, here is the final result, which will be able to thread to the body of the flashlight and start enjoying our own homemade flashlight with LEDs!


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