In this project we’re making a light up stick figure costume!


We used EL wire to create a simple glowing skeleton. EL Wire is a flexible and comes in different colors! 


A creepy skull mask is cut from glow in the dark vinyl and felt to complete this easy but spooky costume!

Prerequisite Guides


If you're new to Electroluminescent materials and soldering, take a moment to walk through the following guides to get you started.


Before you begin, check out our introduction to electroluminescent materials including soldering to EL wire!

Coil of lit EL wire in yellow
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Inverted connected to EL wire and batteries. EL wire lights up when sound runs by
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JST SM 1 male to 4 female splitter
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Angled shot of  9V battery holder clip with 5.5mm/2.1mm plug.
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Angle shot of PKcell 9V battery.
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Monoprice Inventor II 3D Printer with Touchscreen and WiFi
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EL Layout

This provides a visual reference for wiring of the components. They aren't true to scale, just meant to be used as reference.

Carefully fold the EL wire to outline both arms with the female connector near one of the jacket pockets. For the legs, we'll fold the EL wire by looping it around booth legs. Have the female connector end in the center, near the jackets pocket.



The Inverter connects to the In-line wire 1-to-4 splitter. Two 250 cm long pieces of EL wire connect to one of the 4 female connectors.




The striped wires are soldered to the 9v Battery Clip. The white striped wire goes to + (positive) and the plain black wire goes to ground.

What If I Don't Have A 3D Printer?


Not to worry! You can use a 3D printing service such as 3DHubs or MakeXYZ to have a local 3D printer operator 3D print and ship you parts to you. This is a great way to get your parts 3D printed by local makers. You could also try checking out your local Library or search for a Maker Space.

Fusion 360 files 

Below are links to modify the design of the 9v pocket and sewing tabs to fine tune them to adjust to your printer tolerances.

Design Source Files

The enclosure assembly was designed in Fusion 360. This can be downloaded in different formats like STEP, SAT and more. Electronic components like the board, displays, connectors and more can be downloaded from our Fusion 360 CAD parts github repo.

Slice Settings

These settings are for NinjaFlex 85A with a 0.4mm nozzle profiles using FlashPrint Optimized for the Flashforge Inventor 2.

  • Nozzle .4mm
  • Layer Height .2mm
  • Line Width .38
  • Print Speed 40mm/s
  • Retraction 0mm
  • Build plate adhesion type – skirt
  • Bed 0c Blue Tape

Layout wire


First we'll use safety pins to layout our EL wire across a fitted jacket. Make sure to choose a jacket with front pockets. We'll use the pockets to store the battery and inverter.


Loop the EL wire 


Start with the EL wire connector close to the pocket as shown in the picture. Form an equal "T" shape so its as long as the piece of EL wire.




Next on to the legs. We'll bend the EL wire into an upside down "Y" shape. Start with the female connector at the top center and loop the wire to outline both legs as shown in the Circuit Diagram page. 

Sew Wire


Once we finish making any adjustments to the layout, we can start stitching the EL wire.


We used a whip stitch to hold the EL wire to the jacket. We recommend using clear nylon to avoid blocking the wire. 



Battery pocket


Position the Inverter inside the pocket. We'll create a small hole on the inside part of the pocket and use it to pass the male connectors to our Inverter.  


Place the Inverter inside the pocket to so there is enough room for the 9v 3D Printed Battery Holder.  Place the battery holder inside the pocket. Note the placement of the two sewing tabs on the sides of the battery holder.


Sew Battery Pocket


Make sure theres enough room for both the battery and inverter to lay comfortability. Now we'll go ahead and sew both tabs to the inside of the pocket. 

Solder Connections


The sounder Inverters will require us to solder on our 9v battery clip.


We'll use a third helping hand to help hold the wires while we remove the barrel jack on the 9v Clip.


To protect the connections, we'll need to add two small pieces of heat shrink to each wire and then strip, tin and solder each connection.

Arrange in pocket


Next, we'll move on to mounting our battery into its pocket holder.


Position the battery so the battery clip inserts into the holder first, with the wires positioned against the battery as shown in the picture.


Arrange the parts in the pocket so they rest flat against your waist while wearing. 

Connect pants


Next we'll connect the Elm wire on the pants to the Inverter. We can connect our EL wires to any two of the four JST SM connectors.


Any excess El wire can easily hide inside the pocket. 

Face Mask


And finally to finish off our costume, we cut out a skull shape out of felt. We then cut the shape shape out of glow in the dark vinyl. You can glue it to the felt or use heat press material to attach it to the felt.  


To wear, measure a piece of elastic band around your head and then sew or glue the ends to the mask!

This guide was first published on Oct 24, 2018. It was last updated on Oct 24, 2018.