DIY

How to make a rechargeable COB emergency light

Hello, dear readers and self-made people!
When the light is turned off in the workshop or at home, during repair work, an ordinary directional flashlight is not very convenient, as it gives a narrow beam of light.
In this article, the author of the YouTube channel “LahisTech” will tell you how can you make a rechargeable emergency lamp based on LED COB modules (Chip-On-Board – a chip on a board). Such modules have a high density of LED crystals and high brightness.
How to make a rechargeable emergency COB flashlight modules This homemade product is easy to make and easy to repeat at home.
Materials , necessary for DIY.
– LED COB modules 12V
– LED module SMD 5050
– Protective board for Li-Ion batteries BMS 3S 12.6V 20A
– Battery 18650 Liitokala HG2
– Rocker switch KCD4, 3 positions
– Solder, wires
– Power connector
– Nickel tape for welding batteries
– Screw set
– PVC sewer pipe 50 mm, white and transparent acrylic sheets
– Super-glue 502, sandpaper
– Heat shrink tubing with glue filler, double-sided tape.
How to make a rechargeable emergency light on COB modules Tools used by the author.
– Mini spot welding machine
– Dremel
– Soldering station
– Aneng AN8008 multimeter
– Hot glue gun, hot air gun with temperature control
– Screwdriver , step drills
– Deburring knife, nippers
– Screwdriver with a set of magnetic tips
– Tape measure, marker.
Manufacturing process.
So, a piece of PVC pipe with a diameter of 50 mm will serve as a body for a flashlight.
Having laid out 18650 batteries and a LED COB module along it, the author marks and cuts the workpiece to the required length.
 How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules  How to make a rechargeable emergency light on COB modules The ends of the pipe are processed with sandpaper, then the burrs are removed with a special knife .
 How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency lamp on COB modules Now the workpiece needs to be given a rectangular section. To do this, the author warms it up with a technical hairdryer at a low temperature on one side. As soon as the plastic has softened, an aluminum corner is inserted inside, and it presses the tube against the table surface.
In order not to burn your hands, the corner is pressed with a pair of wooden blocks. So you need to align one side.
How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency lamp on COB modules Then the flat side is pressed against the workbench with the corner, another corner is inserted into the tube.
Warming up the remaining surfaces of the tube, the author wedges the edges of the corners together. As a result, after cooling down, a rectangular box is obtained.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules Cutouts for modules are marked in the upper part of the body. On the back you can choose a place for the switch.
How to make a rechargeable emergency COB flashlight modules  How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency lamp on COB modules The extra segment is removed using the dremel . The cut-out part is not thrown away – it will be useful later.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules  How to make a rechargeable emergency light on COB modules A hole for the switch is cut in the same way.
How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules It is more convenient to drill a round hole for the power connector with a step drill – it makes it easier to find the right diameter.
How to make a rechargeable emergency COB flashlight modules  How to make a rechargeable emergency light on COB modules The cuts are cleaned with a file and processed with a engraving machine .
 How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency lamp on COB modules Next, two plugs are cut from a white acrylic sheet. This can be done either with a hand jigsaw or a dremel.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules The remaining segment is inserted into the body. In the final build, it will be installed with the edges down, not as shown here.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules The author took a plastic cover as a piece of glass. Thin sheet plexiglass is also suitable.
How to make a rechargeable emergency light on COB modules The cut rectangular blank is U-shaped … To do this, a corner is applied to the sheet, and the glass is warmed up along it with a hairdryer of a soldering station.
How to make a rechargeable emergency COB flashlight modules  How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules The resulting glass will be inserted into the case. This is best done after installing the LED modules.
How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules Thin holes are drilled through the walls of the case, protective glass and substrate. Parts are held together m2 screws .
How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency lamp on COB modules The corners of the plugs are rounded off on a homemade grinder.
 How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules The battery for the flashlight consists of three 18650 batteries , included consistently. Such a circuit for switching on batteries is called 3s1p.
Having placed two batteries with the same poles in one direction, and the third – on the contrary, the cells are connected with each other with hot glue.
Also, additional insulating rings are glued to their ends.
 How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules Elements are connected in series using a nickel tape.
Mini -the machine for spot welding allows you to very quickly weld the tape to the battery contacts without overheating them.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules BMS 3S protection board will control the battery charge. < br> According to the above diagram, the master solders the wires from the batteries to the pads on the board “B-“, “B2”, “B1” and “B-“.
How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules Using a multimeter , the voltage at the terminals” B- “And” B + “. If the batteries are fully charged, it will reach 12.6V.
How to make a rechargeable emergency COB flashlight modules A pair of 12-V LED COB modules with dimensions 170 × 15mm will serve for the main light. The modules are connected to the power wires in parallel.
How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency light on COB modules Both modules are fixed on the partition in the body using double-sided tape.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules There will be another light source at the end of the lantern. For this, a simple LED assembly SMD 5050 is used. Two separate power wires are soldered to it.
How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules The author isolates open contacts using a hot glue gun . < br> How to make a rechargeable emergency lamp on COB modules Both positive wires are passed through the hole for the power button, and the last module is glued into the end of the case.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency lamp on COB modules After removing the protective films from the acrylic, the first plug is fixed with a second glue.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency lamp on COB modules The positive wires from the LED modules are soldered to the outer terminals of the three-position rocker switch . To the central one – a common positive wire – it will go to the battery.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency lamp on COB modules The terminals are insulated with heat shrink tubing and the switch is installed in place.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules Both negative wires from the LEDs are combined.
Power wires are soldered to the terminals” P + “And” P- “of the BMS board. The wires from the charging connector will also be connected there.
How to make a rechargeable emergency COB flashlight modules  How to make a rechargeable emergency light on COB modules The battery assembly with the board is insulated with a film.
How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency lamp on COB modules It remains to solder the wires to the power connector, pass them through the hole, and solder to the terminals of the BMS board (“P +” and “P-“).
 How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules  How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency COB flashlight modules  How to make a rechargeable emergency light on COB modules Before installing the last stub, the author checks the operation of all modules.
How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules You can charge the flashlight from a 12-V power supply.
How to make a rechargeable emergency COB flashlight modules  How to make a rechargeable emergency light on COB modules In this case, the modules can only work separately. You can set your own switch for each.
How to make a rechargeable emergency light on COB modules How to make a rechargeable emergency lamp on COB modules How to make a rechargeable emergency COB flashlight modules How to make a rechargeable emergency lamp on COB modules Here's an emergency flashlight. If desired, you can increase or decrease the number and location of COB modules , or use strips of a different size.
As a modification of the device, a buck converter for fast charging QC3.0 QC2 can be built into it. 0 , and use it as a power bank.
The production of a powerbank was described in detail in one of the articles .
How to make a rechargeable emergency lamp on COB modules How to make a battery emergency lamp on COB modules I thank the author for the simple design of a small rechargeable flashlight.
Everyone good mood, good health, and interesting ideas!
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The author's video can be viewed here.

Source:

usamodelkina.ru

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