Programming instructions
ROBOTC
VEX Cortex Conguration over USB • 4
©
2011 Carnegie Mellon Robotics Academy / For use with VEX Robotics Systems
VEXnet Joystick Conguration in ROBOTC (cont.)
Section 2: Creating a wireless link betwen the VEXnet Joystick and VEX Cortex
In this section, you will learn how to pair a VEX Cortex Microcontroller to a VEXnet Joystick,
allowing them to communicate over VEXnet. This section assumes that you have already updated
the master rmware on the VEX Cortex and VEXnet Remote Control.
VEXnet is an 802.11 WiFi communication system between the VEX Cortex and VEXnet Remote Control.
VEXnet features include:
• Easy to connect (No IP addresses, MAC addresses, passwords, or special security modes)
• Multiple layers of security built-in and always on
• No wireless access point needed; each VEXnet pair makes its own private network
• Hundreds of robots can operate at once; every VEXnet robot has a hidden unique ID
• Optional tether for wired communication
• Optional 9V battery backup to maintain wireless link during a main 7.2V power loss
• LED scheme displays the status of the Robot, VEXnet link, and Game (Competition Mode)
1. Begin by verifying that both the Cortex and VEXnet Joystick are connected to charged batteries.
1a. Connect a Battery to the Cortex
Connect a 7.2V robot battery to the Cortex,
but do not power it ON.
1b. Install Batteries in the VEXnet Remote Control
Remove the battery cover plate on the remote
control. Install 6 AAA batteries, and replace the
battery cover plate. Do not power the remote
control ON.
Setup