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Installation
Orientation
Reference Frames
Note that the 3-axis coordinate system describes relative motion and orientation; it doesn't specify the
orientation with respect to any other reference. For instance, what does "left" mean once a robot has
rotated 180 degrees?
To address this, the concept of a
"reference frames" that should be understood:
Coordinate
Technical Term
System
Field
World Frame
Robot
Body Frame
navX2 MXP Board Frame
Joysticks and Reference Frames
Since a three-axis joystick is typically used to control a robot, the robot designer must select upon
which Reference Frame the driver joystick is based. This selection of Reference Frame typically
depends upon the drive mode used:
Drive mode Reference Frame
Standard
Body Frame
Drive
World Frame
Field-oriented
Drive
navX2-MXP Board Orientation (Board Frame)
Aligning Board Frame and Body Frame
reference frame
was developed. There are three separate three-axis
X Axis
Side of Field
Side of Robot
See diagram Below
Coordinate Orientation
Forward always points to the
front (head) of the robot
Forward always points to the
front (head) of the field
Y Axis
Front (Head) of Field
Front (Head) of Robot
See diagram below
15
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