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bright usb powered led light

by:Demo     2020-08-24
This Instructable will show how to build a very bright usb powered LED light.
This can be very convenient when you work on your computer or light up your keyboard in the dark.
Another possibility of such a LED Light module may even be the mood light, as it can be placed behind the display, shining on the wall or on the ceiling.
This is my first note, so I hope you like it!
The first thing you have to do is collect your materials.
All the electrical components I used to build this project were scrapped by the old electronic equipment I laid, and the tools needed were very common.
Something for this project :-X-acto knife-Soldering iron-Solder (duh :P)-Hot glue gun-Screw driver (
Used to make holes. -Electrical tape-12 white LED\'s-47ohm resistor-Small switch-Wire-USB cable-Small box (
Or anything that can hold components)-Scissors-
Sharp/penOptional :-Wire strippers-
After collecting all the materials, you can now start modifying the box.
The first thing you need to do is mark where you want to place the usb cable.
Use a screwdriver now (
Or a nail, or anything sharp)
Make a hole in the place where the mark is located.
Now you have a hole in your box where you sit and want to know what to do next. Well. . .
Now you need a usb cable.
The Usb cable doesn\'t have to be anything special, as long as you can peel the wire down and put it in the hole you did before, of course, the usb cable also has to work, this way you can insert it after all the work is done.
For this item you need to cut off the green and white cables and keep them red and black because the black and red cables are the power cables.
After the cable has been spliced, you need to put it in the box now, and when you have it spliced, I suggest you tie the knot so that the cable is not pulled out or moved out of place.
The switch is part of daily life, and the use of the switch can now control the opening or closing time of the switch. . .
Instead of constantly plugging in and pulling out the usb cable.
With this in mind, you need to buy a small switch like the one below.
The switch was bought many years ago, but can be bought every piece for about a quarter.
Then you need to mark the other hole, but it needs to be much larger this time as you will be turning the switch on.
After marking the hole, you should cut out the hole with a knife and then place the switch in the appropriate position.
I know you just cut that beautiful new hole and now your switch is in place so what you need to do next is connect the usb cable to the switch.
Of the remaining 2 wires in the usb cable, you will only connect the red line to the switch.
Weld the red line directly to the switch on one pin, and then on the next pin, you will need to weld another extra wire.
After connecting the two red lines to the two pins, you now need to add a resistor.
I used a 47 ohm resistor for this project (
This is enough. . .
But safer than sorry. )
To figure out how much resistance you need, you can go [
Now connect the last part of the red line to the other end of the resistor and weld in the appropriate position.
Assume 3 ohms per LED.
6 V and 20 Ma running. Edit!
: The actual resistance size should be around 70 ohms, and for the best results you should weld a resistor on the legs of each LED.
We\'re actually close. . .
But time is not good yet.
However, it\'s time to mark your hole on the lid of the box as you want your LEDs.
In my design below, I set it to 2 lines 5 and 1 line 2 with a total of 12 LEDs.
But anything will be done, and you are not limited to this design anyway.
In order to make holes suitable for LEDs, I found that it is the fastest to burn each hole with a soldering iron, from there expanding the holes with a screwdriver or anything large enough.
Now that your hole has been punched, you can now put the LEDs in the hole.
Make sure to insert the LED from the bottom as the ring on the LED will help to secure them inside.
It should be noted that all LEDs should be faced in the same way.
In other words, each anode should be on the right and each cathode should be on the left.
When they are pushed into the proper position, after each anode and cathode are arranged correctly, you should now use a small amount of hot glue to keep the plastic of the LED in place, you don\'t want to apply too much hot glue on the legs of the LED because the LED is still welded.
Now it\'s time to connect the LEDs, it\'s a pretty long process since I don\'t have any board to use (
It will be safer and cleaner).
Just in case I didn\'t mention it before. . .
The LED Settings run in parallel, mainly because the voltage of the USB power supply is only 5 v, so, through parallel settings, it is possible to supply power to each LED at the maximum voltage.
These pictures almost explain how LEDs are connected.
It is important to have some extra wires hang up, as shown in the picture, so that it can later be attached to the bottom of the box. [
The wires between each LED will be bare, make sure to add some hot glue to the overlapping wires to keep them separated, otherwise the circuit will be short-circuited and the led will either flash or not LED Light module at all]
It is also important to note that if the polarity is wrong, the LEDs will not shine at all.
The Led is the wire connected to the cover, the switch is connected to the base, what about next?
You attach them!
The rest of this project is to complete the circuit by connecting the anode to the red line and connecting the cathode to the black line (
Direct from usb cable)
However, the black line needs to extend in order to reach another wire.
After everything is connected, what you have now (should)
What is done is cover the bare wire with tape to prevent any short circuit, and you may also want to stick/screw on the switch you put in at the beginning to make it more permanent.
Please see the picture below. . .
The rest is to put the two halves back together for the last time and apply a small amount of glue on the edge to keep the box together.
The moment we have been waiting is here. . .
Plug in the usb cable and turn on the switch.
You should have a nice bright USB if everything goes wellLED light!
This project is actually my first project, related to LEDs in the circuit, is a learning experience for me (
Not that it\'s hard)
Now I can work on my computer or do anything.
I would like someone to try this project as this is my first note so I would love to get feedback; )
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