Update: 14 Sept 2013: nBot Rev 6.0. nBot completely rebuilt as Version 6.0 after the disastrous LiPo Fire of 2012. Update: 14 June 2012: nBot finally has some avoidance and navigation sensors, two PING))) ultrasonic sonar sensors, and five SHARP IR distance detectors, in addition to the MicroStrain FAS-G IMU. Here is a video of nBot doing perimeter following (72M mpeg) in the basement of the build