objective

We decided to play recreate an old vex competition. We chose Vex Nothing But Net. The objective was to score as many balls as possible in the high and low scoring nets. In addition, we added a button on each of our robots so that if the button was hit the robot would shut off.

my team's goal

We decided our goal was to score the balls in the high goal because the balls in the high goal were worth 5 points vs 1 point for the low goal. Also we wanted to win the autonomous mode.

Our Robot

Our robot was almost 18"x18"x18". We used two vex cortex's and three batteries. For the intake to suck up the balls we used rubber bands, so they could flex and easily grip the ball. To get the balls from the intake to the shooter, we used a 3d printed ramp to align the balls to the conveyor belt. The conveyor belt would then bring the balls up to the shooter. For our shooter we geared it up twice. The final gear ratio was 49:1. The motors we used for the shooters could rotate at 100rpm. This means our shooter was spinning at approx. 4900rpm.

programming

For programming I used Robot C. I programmed an autonomous mode and driver control mode into the robot. The autonomous mode made the robot drive forward, suck up vales, and shoot.

Robot Competition