I noticed, on the ArduIMU+ Demo, that the GyroX ( Pitch ) value seems
to be inverted. I assembled it like manual explains (with all the chips
inside the "cube", with their top face pointing to the center of the
imaginary box, formed by the board walls).
When the AccelY increases quickly the output value, the GyroY does the same before return to the middle value.
But with the AccelX and GyroX the relation is inverse. The AccelX value rises but the GyroX value goes down, in the counter direction.
The GyroX is on the "ArduIMU 6DOF main board" (neighbor of ADXL335).
Is this the right reaction? If not, how can I invert that signal on the code?