Here is our 2014 robot!
Drivetrain: Mecanum drivetrain with each wheel running off of a CIM motor through a 9:1 banebots planetary gearbox. Frame was made in our shop out of I-beams and aluminum plate.
Arm: The arm can go 180 degrees to pickup and shoot on both sides of the robot. The arm is controlled by a CIM motor with a 256:1 reduction.
Grabber: Two paddles made of curved PVC pipe (We had to use PVC somewhere!) and are each controlled by a 1.5" diameter pneumatic cylinder.
Shooter: A custom made pulley is driven by a CIM motor with a 266:1 reduction. That pulley is connected to some steel cable that pulls back a sled along two igus rods and the sled is connected to four strands of .625" spear gun tubing. The cable falls off the pulley on a little cut out of the pulley, which releases the tension on the spear gun and shoots the sled and punches the ball out.
We had one of most successful build seasons yet, and we can’t wait to compete at the UNH and Northeastern district events! Check out our robot at the competitions for some not yet seen additions!