<R7> Robots are allowed the following additional “non-VEX” components:
a. Any material strictly used as a color filter or a color marker for a VEX Light Sensor.
b. Any parts which are identical to legal VEX parts. For the purposes of this rule, products which are identical in all ways except for color are permissible. Note: It is up to inspectors to determine whether a component is “identical” to an official VEX component.
c. Any 6-32, 8-32, M3 or M4 screw up to 2" long, and any commercially available nut to fit these screws.
d. Teams may add non-functional decorations provided that these do not affect the robot performance in any significant way or affect the outcome of the match. These decorations must be in the spirit of the competition. Inspectors will have final say in what is considered “nonfunctional”.
i. Any decoration which interacts with a game piece (even a painted surface) would be considered functional, hence illegal
e. Any non-aerosol based grease, when used in extreme moderation on surfaces and locations that do NOT come into contact with the playing field walls, foam field surface, game objects, or other robots.
f. Polycarbonate as cut from a single 12" x 24" sheet up to 0.0625" thick. (Please note that polycarbonate is different from acrylic sheet, which is not legal. Polycarbonate is sold under trade names such as Lexan® and Makrolon®.)
i. Polycarbonate can be mechanically altered by cutting, drilling or bending etc., but it cannot be chemically treated, melted or molded. Teams may heat the polycarbonate to aid in bending.
g. A small amount of tape may be used for the following purposes:
i. For the sole purpose of securing any connection between the ends of two (2) PWM cables.
ii. For labeling wires and motors.
iii. Teflon tape solely for the purposes of preventing leaks may be used on the threaded portions of pneumatic fittings.
iv. For securing and retaining a VEXnet key to the Cortex Microcontroller. Using tape in this manner is highly recommended to ensure a robust connection.
h. A USB extension cable may be used for the sole purpose of remote mounting of a VEXnet key. The key must be mounted in the following manner. (See the below image for reference)
i. The VEXnet key must be mounted such that no metal is touching the key above the VEXnet logo.
ii. No metal may be within 2” of the top of the VEXnet key.