Hello, dear readers and homemade products!
Just a couple of decades ago, almost all flashlights were created on the basis of incandescent lamps, and they only dreamed of bright LEDs. The modern choice of LEDs and LED modules allows you to create amazing things by the standards of recent years.
In this article, the author of the YouTube channel “KJDOT” will tell you how to make a bright colored flashlight.
This project is quite simple to make, and can be repeated at home. < br> Materials necessary for DIY.
– LED strip WS2812B, 5V
– LED strip controller WS2812B
– Charge controller for Li-Ion batteries, 5V output
– Lithium polymer battery, 2000 mAh
– Pushbutton switch, tact buttons
– Flexible silicone wire
– Flux, solder
– Junction box 95X75X43mm
– Fast curing two-component epoxy adhesive
– Super-glue 502
– Sheet aluminum, plexiglass, Oracal film, double-sided tape.
Tools used by the author.
– Electric Soldering Iron with Temperature Control
– Engraving Machine
– Electric Jigsaw
– Digital Vernier Caliper
– Stainless Steel Nippers
– “Third Hand” with backlit
– Tweezers, handicraft scalpel
So, this Li-Ion battery charge controller … This module has a built-in converter that outputs 5V with a current of up to 1200mA.
There are two connectors on the board – microUSB for connecting a charger, and a regular USB, which is a 5V output. A large connector is not required in this scheme, and the master unsolders it, after having bite into the fasteners with side cutters .
The board will be powered by a 2000 mAh lithium polymer battery. The battery power wires are soldered to the “B +” and “B-” contacts of the charge controller, respectively.
A simple three-button LED strip controller will control the LEDs operation mode, as well as the glow color.
You need to remove the protective heat-shrinkable tube from it, leaving only the board.
The author cut the standard power wire in vain, and he had to re-solder a couple of pieces of wires observing the polarity.
The ends of these wires are soldered to the contacts “G” and “V” (located under the removed USB port) on the charging module.
The buttons on the LED strip controller are implemented in the form of three plates glued to the board with tape. They need to be removed, tinned contact pads, and soldered to them with wires pushbutton switches .
In most cases, the factory leaves the batteries with a small charge and the device is already starting up.
Therefore, you should solder the battery to the entire circuit last.
As you can see, by connecting the LED strip to the controller, it already works.
From the controller you need to unsolder the standard connector to which the LED strip WS2812B is connected.
Four pieces of wires are soldered to the released contacts. It is better to take them in different colors so as not to be confused when connecting to the tape.
As a body for a flashlight, the author decided to use a half of a plastic junction box with dimensions 95X75X43mm. In the walls of the box, using an engraving machine , holes are prepared for buttons, and a micro-USB connector for charging the battery.
The battery is fixed to the bottom of the case using double-sided tape.
The charging board only sticks to the body with a couple of drops of second glue. Here you should be careful not to get glue inside the connector and ruin it.
Three buttons are displayed on the side panel through holes.
The ribbon controller board is also glued to the bottom of the case with double-sided tape.
Now the buttons and the boards are additionally fixed in the case with fast-curing two-component epoxy adhesive .
Next, the master measures the internal dimensions of the case with a digital caliper , and cuts out a rectangular plate from 1.5-2 mm aluminum sheet. It will serve as a kind of heatsink and mount for LEDs at the same time.
The addressable LED strip WS2812B will serve as the light source. In such strips, each LED has its own chip, and can be controlled separately.
The tape is cut into strips of 5 LEDs. You need 6 such strips. The result will be a lamp with 30 “pixels”, each of which consumes about 50mA at full brightness in “white” color.
Without removing the protective film, the strips are glued to the radiator. The author decided to do this in order to reduce the likelihood of short circuits.
On one side, the contacts of pairs of adjacent strips are connected with jumpers.
On the other side, jumpers are placed between the ends of 2 and 3, 4 and 5 strips. The wires from the controller are soldered to the terminals of the first.
After dropping epoxy glue on the housing racks, the radiator is installed in its place.
The glass is cut from a 3 mm acrylic sheet on a small circular saw. This machine is combined, and can work as an engraving machine. The production of this table-top machine was described in detail in the following article .
A protective film is removed from one side of the glass. To get diffused light, the author glues a white matte Oracal film to the glass.
If you need diffused light, you can cover the LEDs with frosted glass.
Before first use, you must fully charge the battery using a standard smartphone charger .
The number of lamp operating modes, and the way of control (from a smartphone, buttons, or from the remote control) depend on the controller used.
By the way, the Chinese have developed a similar theme, and now there are various u> modular LED luminaires . Large light panels can be assembled from several segments. In different variations, they can be controlled from a smartphone, remote control, or “touch” method.
I thank the author for the simple design of a multi-colored flashlight.
Good mood, good health, and interesting ideas to all!
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Author's video can be viewed here.
Hello, dear readers and homemade products!