My nephews and niece were in town for Halloween and I was struck with the idea of adding a little animation to our Halloween Pumpkin. I wanted to make a pumpkin that changed expression. We made a basic smiley face and angry face by carving grooves into the face of the pumpkin. Then, we laced the EL Wire in and out of the grooves. We used red for the mad expression and blue and green for the smile expression. It was pretty easy to do and I had fun sharing my bits knowledge with the kids. It was rewarding to hear them come up with their own ideas — “We could hook an MP3 player up to this and scare people” or, “What if we added motion detection?”. It was also fun to hear my 5-year-old niece Zoey say, “Electroluminescent”.

www.youtube.com/watch?v=Kc2yjj0oYdo

Parts:

• EL Inverter – 12v
• EL Wire – Red, Green, and Blue (3 meter length)
• Wall Adapter Power Supply – 12VDC, 600mA

Notes:

I think the Blue EL Wire worked the best and looked the best. The red looks a little orange. The Green EL Wire sometimes didn’t illuminate. You can only illuminate 2 strands of EL Wire at a time with the stuff I had from SparkFun. I need to experiment more with EL Wire and get an EL Wire controller to do some more intricate animations. I will post future projects if I come up with anything interesting.

Always start with sketches when you start your project. It’s important to have a plan to allow yourself to stray knowingly.

EL Pumpkin Sketches

EL Wire is LED of the future if you ask me…

For this instructable you will need an installed copy of EAGLE and a PCB Layout that you want to add some graphics to. I am using SparkFun‘s FT232RL USB-to-Serial Breakout PCB (EAGLE Files) for example purposes.

Adding Custom Graphics to EAGLE PCB Layouts – More DIY How To Projects