He used an Arduino Mega and Adafruit Neopixel library combo to add and control the animations. To see steps in detail, check out the Instructable below. It seems worth a shot if you've got the skills.

Installing the library is as easy as checking out the code from GitHub into your Arduino install, so that’s exactly what I did. I then spent a couple days playing around with it.

Making a servo tester using an Attiny85 micro chip, Attiny45 also works for this project. This diy servo tester is as good as ...