My Halloween costume will have two circuits. The one viewed above will be sewn onto my cape. The lights will protrude the cape, and I will cap them with spiders. These LEDs will be orange, as the cape is black and purple.
The Gemma circuit is still a work in process. I will have the Gemma sewn onto the mini witch hat. I will use four 3V batteries, in a small carrier, a switch, and an LED strip. I am still working on the code, debating if I should just have the Gemma, or that along with the LED strip. I am excited about this project and how all the colors will come together.