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This instructable will show you how to build a LED flashlight.
Tools Soldering Iron Hot Glue gun Nail clippers Wire strippers Marker Materials 1/2" Pipe Cap 4.5" x 1/2" Threaded Pipe 1/2" to 3/4" Pipe adapter Perforated circuit board ...
Cut a circle out of the perforated circuit board that will fit inside the pipe adapter.
Put the LEDs into your circular circuit board to see how they fit. Then trim the LED leads and leave the longer lead slightly longer.
First solder the LEDs to the circuit board. Then solder all the positive and all the negative LED leads together. Test your LED board with a 3 volt ...
Create a spring for the flashlight.
Screw your LED board into the steel adapter. Leave an uninsulated wire connected to the negative connection of the LED board hanging so it makes contact with the ...
Cut some foam spacers that go between the battery and the contact point. The spacers create a switch that is on when the adapter is tightened.
Tweak the number of foam spacers so that the flashlight turns on only when the adapter is tightened.
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