RobotEx 2011

Newest Release



The Claw

RobotEx chose to implement The Dragon design because its dimensions allow it to collect each type of bug. The claw is made from clear plastic and shaped to allow the collection of all materials with maximum efficiency. The three circular cutouts on each side of the claw are designed to reduce the weight of the claw and the stress on the arm. When open, the claw has a span of 12 inches, which covers approximately one third of the Shed’s base. When the cockroaches are in the claw, the arm can be tilted upward so that the cockroaches enter a gullet at the base of the claw. It can transport the termites by closing around its cloth mid-section.  The dimensions of the spherical flies are perfectly accommodated by the interior of the claw.  As the claw can hold the spherical flies, it can also contain the spherical foods.

The Arm

The arm was designed in order to lift the significant weight of the termites and provide the extension necessary to collect black flies. In order to do this, a 13 inch gear was used to extend the arm with a motor and spool of thread. The arm consists of two Igus tracks and Igus chain, which allow the arm to telescope. The Igus chain also contains and protects the electrical wires that run from the cortex to the claw. The arm reaches up 48 inches from the ground, allowing the capture of black flies. Another spool of string, attached to the pivot point, provides vertical motion. Also, two servos at the top of the arm control the claw.  

The Drive Train

The wheels are designed to efficiently traverse the three obstacles in the CAs. The seven cuts in the wheels are designed to easily travel over the various-sized pipes in the PCA. On the ridges in between each semi-circle cutout, three holes are cut out. Bike tubing is weaved through these holes to provide traction as the robot moves.
The caster acts as a slider and is made of a short piece of PVC pipe that contains a wooden ring in the middle. This design allows the robot to smoothly go up the pyramid of PVC pipes in the PCA.