Strife or sway measurement thru navx board

[Lee Riddick]

Hi
im trying to figure out how can i measure the slow movement  side to side using the navx mxp. Besides using accelerators which will not be effective to accurately measure with accuracy like a gyro can maintain a coordinate, which you can return to. If anyone knows how to do this please help.  An example of what im trying to do is as follows: you have a robot that is driving straight to a gyro set point, while it is maintaining the navigation point while moving forward the robot has a slight movement or strife to one side, but it maintains the foward coordinate, i would like to take the x movement and correct this movement.

[admin]

If it's an angular tilt you want to measure, then the "roll" angle will provide helpful information.

But from your description, it sounds like you want to measure lateral left/right (X-axis) motion; from my experience the best solution is to mount a fixed wheel (omniwheels work well for this) with an encoder on it that measures the linear motion in the X axis.

As you've mentioned, the accelerometers on todays inexpensive IMUs are not accurate enough, so I think this type of passive "follower" wheel is the simplest thing that could possibly work.