I rolled with the Intergalactic Krewe of Chewbacchus for Halloween with a troupe of space vikings. If you'd like to add some LED bling to your costume, here's what you'll need:
- individually addressable RGB LED strip
- 9V battery
- battery clip
- 3, 3V coin cell batteries
- 3 LEDs of various colors
- heavy duty foil
Video of crazy me:
Step 1: Helmet
Step 2: RGB LED strip + Arduino
I added a strip of individually-addressable RGB LEDs to my helmet. The LED strip, tutorial, and code can be found on the Adafruit Industries website.
Make sure you cover the strip in tape so that the aluminum foil doesn't short the circuit.
Step 3: stuff the circuit in the helmet
The LED strip is connected to an Arduino that I housed in one of the helmet's horns. I used a 9V battery to power the Arduino. I soldered a barrel jack to a 9V battery clip to make the power connection easy and secure (or you can buy one of these guys).