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This is a very simple build. All you need is

  • three LEDs
  • two 1.5 volt or a single 3 volt button cell battery
  • electrical tape
  • a few minutes time

Step 1: Prepare the LEDs

  1. Hold all three LEDs at their top.
  2. Wrap electrical tape around the three long wires (anode, +). Leave the ends blank.
  3. Wrap electrical tape around the three short wires (cathode, -). Leave the ends blank.

Step 2: Prepare the Battery

  • Wrap electrical tape around the button cells. Leave the top blank. I left the minus pole blank.

Step 3: Assembling

  • Attach the LEDs to the battery. Remember, I have left the minus pole blank. Therefore, insert the longer wires (+) of the LEDs between the plus pole of the battery and the electrical tape
  • Fix the longer wires of the LEDs to the battery by using electrical tape
  • The shorter wires of the LEDs should be straight above the minus pole of the battery without touching it

Step 4: ​your Micro LED Flashlight Is Now Finished!

  • Congratulation your micro LED flashlight is now finished!
  • You turn on your new flashlight by pressing the shorter LED wires on the minus pole of the battery.

Was really easy as stated. Could use the concept for bigger ideas. Thanks.
<p>Very simple .. i liked it!</p>
<p>How long time use the two batterys power for the three leds.</p>

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