<R11>
Robot Brain. Robots are limited to one (1) VEX IQ Robot Brain. Robot Brains, microcontrollers, and other electronic components that are part of the VEX Robotics by HEXBUG, VEX GO, VEX EXP, VEX V5, VEX 123, or VEXpro product lines are not allowed. The Robot AA Battery Holder (228-3493) is the only exception to this rule, per <R13>. If using a first generation VEX IQ Brain, Robots must use one (1) VEX IQ 900 MHz radio, VEX IQ 2.4 GHz radio, or VEX IQ Smart Radio in conjunction with their VEX IQ Robot Brain. The VEX IQ Brain and VEX IQ Controller may not be physically connected during a Match, and may only communicate through the radio. The only legal method of driving the Robot during Teamwork Challenge Matches and Driving Skills Matches is the VEX IQ Controller. Attachments which assist Drivers in holding or manipulating buttons / joysticks on the VEX IQ Controller are permitted, provided that they do not involve direct physical or electrical modification of the Controller itself. See <RSC8> and <RSC9> for more information about operating the Robot during Autonomous Coding Skills Matches. Additional Robot Brains cannot be used on the Robot (even Robot Brains that are not connected)