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How to Build a Blinking Switch for LED Lights

Making a LED flash when it is connected to a switch can be done by demonstrating how electricity and circuits work. In the past, LED lights would require the use of resistors that are connected to a battery. However, there are special LED lights that are designed to blink that you can easily wire to a switch. You can do this as a science project for school by first obtaining all of the necessary parts.

Things You'll Need

  • Flashing LED
  • Battery holder
  • Soldering iron
  • Screwdriver
  • Toggle switch
  • Black electrical wire
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Instructions

    • 1

      Connect the end of the red colored wire on the flashing LED to the ̶0;Positive̶1; terminal of the battery holder. Secure the wire by soldering with a soldering iron or tightening a screw with the screwdriver.

    • 2

      Attach the black colored wire to the toggle switch. Secure the wire on the switch by tightening a screw or by soldering with the soldering iron.

    • 3

      Connect one end of the black electrical wire to the switch. Secure by soldering or tightening a screw.

    • 4

      Attach the other end of the black electrical wire to the ̶0;Negative̶1; terminal of the battery holder. Secure by soldering or by tightening a screw.

    • 5

      Insert a battery into the battery holder. Flip the switch to the ̶0;On̶1; position to see the LED light up and flash.


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