Скачать или смотреть LED USB Light DIY no soldering

00:00 Title
00:00:05 Some of my projects involve the use of Light Emitting Diodes (LEDs)    • Night Aquarium LED DIY  
This type of LED can be found in many disposable gadgets/ toys.
LEDs are in disposable gadgets that are powered by batteries.
It could be a different number of LEDs powered by different types of batteries giving a total of 4.5V.
In this example, I am going to use LED from a lighter.
Unscrew the cover.
Push the light switch in.
Pull the LED out, along with the housing.
Save the batteries to use later with other gadgets.
My dog will love this ;)    • How to fix squeaky doors  
01:01 I have a pile of old USB cables.
All of them can be used to connect an LED to a power source!
A USB wired mouse is a good example :)
01:16 Get a USB cable of a desirable length.
Cut off one end of the cable, leaving the USB connector on the other end.
I keep the USB 2 connector type A in this example.
Strip off insulation on the open end of the cable.
This cable has multiple layers of protection.
Unwrap and cut it off.
There is a number of wires marked by different colors.
The power wires are usually marked by red and black.
Remove 2-3 cm of insulation from these two wires.
Check links on LED polarity:    • LED polarity  
and how to find corresponding ends of the wires:    • How to find correspoinding ends of wires   , in case your wires come in different colors ;)
02:15 Test wires with the LED.
Plug the cable into a USB charger (or a battery pack in this example).
Connect wires to corresponding ends of the LED (red to +, black to -).
It works!
Cut off all other wires.
Wrap wires around corresponding ends of the LED.
02:47 Insulate each connection separately.
Here, I use regular sticky tape for this purpose.
All works properly.
03:01 I use a piece of a plastic straw to make housing for LED.
Push the LED through the straw, leaving LED inside at the other end of the straw.
The straw should be long enough to cover the wires overlapping the cable.
Loop the cable at the end of the straw.
Secure the loop to the straw using sticky tape.
It should prevent from any accidental disconnecting wires from the LED.
03:40 A paper clip makes a nice holder/ hanger to fix the LED light in place.
I use different brand chargers with 5 V output to test my LED light.
All works fine.
I wonder how long the LED from a disposable item would work without a resistor.
I plug it into a laptop for 12 hours a day starting from December 19th, 2017
It still works by the moment of publication of this video, without any noticeable reduction in quality.
I am going to put an update on how long it works right here ;)
The LED is working as of today, January 1st, 2019 (I keep it on 24/7).
Have fun and happy light :)

Blog: http://rndmbits.blogspot.com/2018/01/...
More fun on my website www.fewdoit.com