EL Pumpkin is Spanish for Electroluminescent Pumpkin

EL Wire is a flexible wire that glows when you apply electricity to it. I am seeing more and more things trimmed with EL Wire and it makes for interesting effect. If you watched America’s Got Talent you might have seen a finalist called Team iLuminate. The iLuminate team used EL Wire to create animations and lighting effects on top of group dancing.

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”.

Parts:

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 Pumpkin Sketches

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

Steam Pumpkin – My Steampunk Pumpkin

Halloween is one of my favorite times a year being ShadowLord and all. I was BatMan three times in my life and only once as a kid. Pumpkin carving is something I also get into. My first pumpkin at age 9 was an old farmer smoking a pipe. It even had a twinkling red LED in the corncob pipe. After burning up a handful of LEDs my dad taught me about current limiting resistors.

Fast forward 20 years and I am still shoving LEDs into pumpkins. This year my inspiration comes from steampunk, a growing subculture fascinated with steam-aged garb and future technology fusion. Steampunk was born of the H. G. Wells and Jules Verne visions of futuristic technology and style. Call it what you want, Steampunk is an inspiring movement of makers and re-users of technology and materials.

Here is my steampunk inspired pumpkin.

Where do you start?
I cobbled together whatever I could find that resonated steampunk. I found my Mom’s old purse that had some faux leather, brass loops, and a gold chain. I also grabbed an old candle holder, a lamp shade, a door hinge, a metal coffee filter, and some brass brads. My Dremel was used to drill, cut metal, and and cause sparks (insert grunt).
Full of hot air
I knew that I was going to add some technology to the design and I settled on an automated fog machine that would blow smoke from the ears of the pumpkin. Okay, I know it’s a little literal, but it is a steam pumpkin.
How do you do that?
Using the ioBridge IO-204, I rigged up the fog machine to trigger when someone walked in front of the pumpkin. I used a passive infrared sensor from Adafruit to detect motion. The IO-204 has an upcoming feature that allows for on board logic, meaning you can break off of the Internet and have local controls take over. To integrate it with the fog machine, I tapped into the wireless remote control that came with the fog machine. This made it easy to control using a single relay. To light the pumpkin, I bought a BlinkM RGB LED Blaster from Sparkfun. The LEDs are high intensity lights that you can mix colors together. It turned out to be a neat touch. When someone gets close, I set the color with the IO-204 to an evil red to accompany the smoke.

For more information and more “How-to” detail, check out Instructables.com.

Introducing The Steam Pumpkin
Here is a YouTube video of “Steamy Wonder” in action: