What I want to do
Leif Percifield's Visualight is an affordable Arduino-compatible USB-stick with a powerful RGB LED on it -- perfect for a thermal flashlight! So I jumped into just getting the colors to change. I'll try something with the Melexis infrared sensor later, but Leif left i2c pins open specifically so that we at Public Lab could connect such sensors! It's also open source. Leif is the best.
My attempt and results
I made this Arduino sketch: https://gist.github.com/jywarren/7488213
It just blinks each LED in succession; real simple.
Questions and next steps
Next up: connecting a power source (just a 2 AA battery USB power source) and the IR sensor. This thing is so compact, it'll fit nicely into a tube or other enclosure.