A bright standalone DIY lamp

Suddenly a failed external battery is not a cause for frustration, especially if only its microcircuit is damaged. Of course, this is the most important part in this device, but if the batteries are not damaged (in many such devices are often used), they can always be used. My external battery had six lithium-ion cells. Each is 4.2 volts and a capacity of 6800 mAh.
A bright self-contained lamp with your own hands
At least, so it was stated on the label. Not having a device for measuring, I took them to my friend, to check. Measurements showed a capacity of 4300 mAh, which is also very good. As for voltage, the label did not lie - 4.2 volts. At the same time asked to identify the failure of the device itself. After making sure that the reason was in the microcircuit, and the batteries were not damaged or damaged, I quickly found a use for them. I decided to make a wall-mounted, independent of the outlet, a lamp (the good, the capacity of the batteries allows it to work in such conditions).By connecting three batteries in series and getting 12.6 volts at the output, I connected a 12 volt LED light bulb from an old chandelier for the sake of interest. The effect is quite impressive - in the first seconds I was blinded. The light is incredibly bright. At least in the chandelier was not so bright. The light bulb itself, for some reason, almost does not heat up, which is rather strange with such light output. Strange, because I know that LEDs also tend to heat up when the brightness is high. Take at least a flash in the phone, if you use it as a flashlight ... But this suddenly opened plus gave me the idea of ​​such a lamp - it works for a long time, it heats up a little, I am glowing brightly! We proceed to the assembly.

It will be needed

  • A length of metal pipe 30 mm in diameter and 210 mm long.
  • , voltage 4.2v . (you can also use four batteries per 3.7v. But then you have to lengthen the tube-housing to the appropriate distance)
  • and the cartridge holder to it.
  • Internal and external hollow M10x1.5 threads (such as used in chandeliers, wall lamps, desk lamps and other electrical appliances).
  • Lock nut 15 mm.
  • 15 threaded end cap mm.
  • Thread from a plastic bottle.
  • Two caps from a plastic bottle.
  • Plastic itself from a bottle (smooth,area 200 × 150 mm).
  • Spring.
  • Tin-lead solder and flux.
  • Thin wire from headphones .
  • Heat-shrinkable tubing for 3 mm.
  • Aluminum wire with section of 2-3 mm.
  • Seconds glue.
Bright stand-alone lamp with their own hands
Tool:
  • Grinder.
  • Scissors.
  • Stationery knife.
  • Sandpaper.
  • Round file.
  • Drill.

Luminaire manufacture

First, prepare the luminaire body. It will be from a metal pipe. After we cut off the necessary piece, we will process the edges with a sandpaper and a round file in order not to get hurt when working. Now, with the help of an aluminum wire tie and knitting needles, we press the lock nut to one of the ends of the pipe.
Bright autonomous lamp with your own hands
We process flux and put a piece of tin-lead solder on top, close to the joint. We heat this structure on a gas stove.
Bright Autonomous lamp with their own hands
Carefully so that the solder does not fall. Upon reaching the required temperature, the molten solder itself will spread throughout the joint.Now we cool it all. Remove the screed. The result was such a blank:
Bright self-contained luminaire with your own hands
We cut off the field from the plug with a grinder so that it is flush with the body. Although, you can leave if too lazy to mess around. Just if in the future the lamp will be inserted into the bracket on the wall, these fields can interfere. Now let's do the bottom cover. We take the plug for 15 mm, drip inside the flux, put the spring in there, put the solder in and repeat the procedure with heating.
A bright self-contained lamp with your own hands
Bright stand-alone lamp with your own hands
It turned out the bottom cover of the lamp, through which we insert the batteries. And now the top cover. The plastic cut out of the bottle is rolled up and inserted into the prepared thread from the same bottle. This plastic tube, in addition to the insulating function, will also serve as a filler, so that the batteries do not hang out and do not rattle inside the case when the lamp is in mobile use.We solder to the edge of the case from the inside a small posting (for the minus, which will be on the mass).
Bright autonomous lamp do-it-yourself
Skip this posting between the thread and the plastic tube and insert this tube into the case.
Bright autonomous lamp do-it-yourself
Bright stand-alone lamp do-it-yourself
We drip a little second glue, for loyalty, to all the joints of plastic. It turns out such a case with thread:
Bright self-contained luminaire with your own hands
Next, two cooked bottle caps are glued together with the bottoms and drill a 10 mm hole in them in the middle.
Bright autonomous lamp do-it-yourself
Bright self-contained lamp with your own hands
Now take the hollow thread from the chandelier and, cutting out a brass or copper stub, solder the plug to the thread. This will be a positive contact. We drill a 3 mm hole in this thread for the negative wire,which we soldered to the mass.
Bright autonomous lamp do-it-yourself
Bright self-contained luminaire with your own hands
Insert this thread into the hole of the glued covers and wind up a thick washer with internal thread on the other side.
Bright autonomous lamp do-it-yourself
Bright self-contained luminaire with your own hands
We skip the negative wire from the mass into the resulting through hole in the threads and wind the whole structure onto the body.
Bright autonomous lamp with your own hands
Now, solder the minus to any of the contacts of the cartridge, isolate it.
Bright autonomous lamp with your own hands
We clean the second contact at the cartridge and, pressing it to the cartridge thread, we twist the cartridge into the thread of the thick washer.
Bright Autonomous lamp do-it-yourself
Remove sticking out of the wire.Thus, we received an external metal case - this is a minus, and the internal assembly of the threads is a plus. The role of the switch will play the bottom cover, by turning it in one direction or another. We shorten the spring to the required length, which allows to obtain a closed circuit with full tightening of the cover, and breaking the chain with a slight loosening of the cover. We insert batteries and use. If there are suitable small plafonchiki - you can use. By the way; This lamp is easy to adapt and under the flashlight. It is enough to cut the upper part together with the thread from any plastic bottle, paste it from the inside with a shiny self-adhesive film (well, or with foil, in extreme cases!) And screw the resulting reflector onto the internal thread of the case remaining on the glued covers.
Bright autonomous lamp do-it-yourself
Bright Autonomous lamp with their own hands
The lamp turned out good. Powerful. As you can see in the video, it shines very well even in natural daylight. You can take it with you to rest in nature with an overnight stay. I still have three batteries, which I keep charged.They charge quickly enough - 3-4 hours, and can work more than 7 hours. And buy such is not a problem, if that ... Well, in the bracket, for fixing to the wall, you can make a piece of pipe, slightly larger diameter than the case of the luminaire.

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