EL Wire Light-Up Dog Harness

Contributors: jenfoxbot
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Whether it's to keep Fido (or in my case, Marley) visible on an adventure or as an awesome all-year-round costume, a light up dog harness is an excellent accessory for your favorite pup.

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EL wire is a great option for wearable lights. It stays cool, is flexible, and comes in lots of different colors. This design uses the SparkFun EL Sequencer to automatically turn on EL wire when it is sufficiently dark outside, so you don't have to worry about locating Mr. Dog to turn the on system.


Here is a list of all the parts and tools used in making this project.


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Harness Materials

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  • Dog harness
    • A vest or backpack will also work
  • Waterproof jacket w/ pocket(s)
  • Optional: Tupperware or other sealable plastic container


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  • Safety goggles
  • Soldering Iron
  • Wire Cutter/Stripper
  • Epoxy (waterproof)
  • Scissors
  • Needle + thread OR fabric adhesive
  • Optional: Velcro

Recommended Reading

If you are new to electronics, EL wire, or the EL Sequencer, or would like more information on the main components in this project, check out this tutorial:

As this design also uses a lithium ion battery, I also recommend reading this tutorial to give you an overview on proper care and handling of lithium batteries.