I successfully calibrated the MPU, but Nybble doesn't seem to react to any rotation. I tried the balance skill in both WriteInstinct and the Nybble sketch. It moves to a standing posture, but doesn't react at all to pushes from side to side or tilting the surface it's on. It just stays locked in the standing posture. When I start it with the Nybble sketch it seems to initialize correctly: Connect MPU6050 Test connection MPU successful Initialize DMP 1786 63 3 118 Enable DMP Enable interrupt DMP ready! Any ideas what I'm missing?