I wanted to experiment with NeoPixels from Adafruit and the Particle Core so I built a color changing ambient light orb.
TrainLight hangs on the wall and subtly tells you at a glance which nearby transit lines will get you to your destination fastest.
Code and more for Raspberry Pi IoT (Internet of Things) demo presentation.
Glowing eyes appear, blink a few times, and disappear again. What are these creatures? Why are they watching us?!