After our hardware wizards worked their magic in reworking the boards, we ran through our tests again. First off was the GPIO toggling test. Finally some hope! Both SDL and SDA lines seemed to be toggling properly. Next, we tried getting raw IMU data from each of the BNO055s. And what do you know, suddenly it started working! We ran through each of our module-level tests and everything seemed to be working properly.
One issue that popped up was when grabbing raw gyro data from each of the BNO055, it seemed like every other reading was (0,0,0). After going through the paces of hardware verification, eventually it was found that there needed to be a slightly delay between consecutive reads of the IMU.
Now onto sensor processing tuning!!
factsydp 