Cabe Atwell has posted about his latest project on the Element 14 website. It’s a hard, plastic, spherical ball inside which is mounted a Raspberry Pi, a couple of batteries, a Neopixel strip and an accelerometer. By rolling the ball, the accelerometer takes readings and when the ball is in a certain orientation the Neopixels light up and generally make things pretty. You can read how he did it here and see a video of the project, including a really inadvisable test of rolling it down a set of stairs, below.