Instructables
Picture of LED flashlight
this instructable will tell you how to build a LED flashlight out of a broken flashlight.
 
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Step 1: Disassemble the flashlight

Picture of disassemble the flashlight
my flashlight had a broken switch and a cracked bulb. so, i opened it up.

Step 2: Get the LED

Picture of Get the LED
photo-13. 11. 23. 오전 10:37.jpg
photo-13. 11. 23. 오전 10:37.jpg
photo-13. 11. 23. 오전 10:37.jpg
photo-13. 11. 23. 오전 10:37.jpg
i used a single blue LED. It won't be that bright, but it was the only thing i had. I also used a 2-hole connecter for the LED. I also added a bulb head so it looked like a bulb.after that, I rigged the LED on the reflector dish.

Step 3: The Switch

Picture of The Switch
photo-13. 11. 23. 오전 10:37.jpg
photo-13. 11. 23. 오전 10:37.jpg
the original switch was broken, so i used a button switch. i used a hot glue gun to put a hole, and fit the switch inside.

Step 4: The eletronics

Picture of The eletronics
get some batteries. i used 2 AAA batteries and connected them to the switch and the LED.

Step 5: Reassembling

Picture of Reassembling
After that, reassemble the flashlight and It's done!