How do I Make a LED Flash Light for a Dashboard?

How do I Make a LED Flash Light for a Dashboard?

A flashlight on the dashboard of your car can be a convenient addition that helps prevent those frustrating moments when things seem to disappear beneath a seat or you need enough light to read a map. The 12-volt power supply used by the car's cigarette lighter is a handy power source for a low-current LED flashlight that you can make yourself. Keep it in the car for the next time you need a little bit of light.

Instructions
1
Separate the lid from the 35-mm film canister. Poke four pairs of holes in the lid using the pushpin. Each pair of holes should be spaced 1/4" apart to accommodate the two legs of an LED light. Push one white LED into each pair of holes, arranging them so that the long leg of each LED is next to the short leg of the LED next to it.

2
Connect the LEDs in series by twisting the pairs of adjacent legs together. You should have one short leg and one long leg left unconnected.



3.Poke two holes in the bottom of the 35-mm film canister with the pushpin. Untwist three inches of the copper wire and then thread the two red and black wires through the holes.

4
Twist the red wire around the long leg of the LED array and the black wire around the short leg of the LED array. Use small pieces of electrical tape to insulate the connections, and then place the lid of the 35mm canister back on to secure all the flashlight components.

5
Separate an inch of wire on the free end of the copper twisted pair wire. Match the colors to the wires of the 12-volt car adapter plug and connect them, black to black and red to red. Plug the adapter in to make sure the LED flashlight lights up. If it doesn't, try reversing the order of the wires, so that red connects to black and vice versa.

6
Tear the hook and loop tape apart, and remove the non-stick cover from the sticky back of the loop side before pressing it firmly against the location on the dashboard where you want the flashlight to rest. Remove the non-stick cover from the sticky back of the hook side of the tape and wrap it around the 35imm film canister. When the flashlight is not in use, you can keep it secured to the dashboard with the hook and loop strips.


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