Cubic robot that can flip, roll around, and balance on edge
Uses the Servo Timer 2 library by Nick Bontrager to control servo with Timer2 since Timer1 is used for main feedback loop
https://github.com/nabontra/ServoTimer2
Uses the MPU-6050 library by Jeff Rowberg
https://github.com/jrowberg/i2cdevlib/tree/master/Arduino/MPU6050