Kauai Labs navX-MXP User Manual page 9

Overview
Frequently-asked Questions
Will navX-MXP work with the Android-based FTC Control System?
Yes, navX-MXP can be used with the Android-based FTC Control System, via its I2C
interface. For more information, please see the FTC Robot Installation instructions and
the description of the
Will navX-MXP work with the older National Instruments CRIO™ robot controller?
Yes, navX-MXP can be used with the National Instruments CRIO robot controller by
using the nav6 libraries, which are available on the . You will need a USB-to-RS232
serial converter in order to connect navX-MXP to the CRIO's RS-232 port, and you will
also need a 12VDC-to-5VDConverter to provid power/ground to the power pins on the
navX-MXP's MXP Connector.
Please note that the legacy nav6 libraries only use the navX-MXP serial interfaces, and
do not provide access to new navX-MXP features including 9-axis headings,
magnetometer calibration and magnetometer disturbance detection.
What interface/installation options are available for the navX-MXP?
Plug-n-play install to the RoboRIO MXP port
Connection to the RoboRIO MXP port via a male-to-female
ribbon cable
Connection to one of the RoboRIO USB Connectors
Connection of power (+5VDC)/ground to the navX-MXP's MXP Connector,
and direct connection to the TTL UART, I2C or SPI
Aren't the magnetometer (compass heading) readings unreliable when the navX-MXP is
used on a Robot with powerful motors?
Yes, this is correct. If navX-MXP is mounted nearby any energized motors, the
magnetometer's ability to measure the (weak) earth's magnetic field is severely
diminished.
However, at the beginning of each FIRST FRC match, the robot is turned on for about a
minute before the match begins. During this time period, the motors are not energized
and thus do not add magnetic interference that would disturb the magnetometer
Android Libraries.
floppy-disk-style
via a USB Cable
pins.
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