Team 3397 presents: Serenity

[Walter Deitzler]

The story of our bot:

In our first strategy session of the season, directly after kickoff, team 3397 decided that we would try to go for a 50 point climber/dumper mechanism. We spent 3.5 weeks rapidly prototyping our this strategy. When we finally chose a design for our climber, we realized one very important thing, that would make us change how we played the game: we did not have the resources or expertise to pull off what we were trying to accomplish. If we had continued down that path, I feel that we would have not been able to climb, and would have ended up on a path, that, quite frankly, we did not want to be on. So on Wednesday the 30th, we totally changed our strategy. We were too deep in the season for us to build an effective shooter robot, so we pulled a page from team 4334's book and decided to build a feeder bot.

Over the course of 4 days, myself and one other teammate totally revised all of our technical drawings that were to be sent to our welding and machining sponsor. This was our first year with Ranken Technical Institute as a sponsor, and our first having a welded robot. They allowed myself and one other teammate to come in on Wednesday the 6th and Thursday the 7th to witness the welding being done. We than moved the robot back into out shop for painting and final assembly of all of the various pieces going onto the robot.



Specs:

Chassis Shape:

This shape was originally designed to help with climbing, as it was smaller and lighter than if we had done a full rectangular frame. When the whole design changed, we decided to keep with the "stingray drive" shape, because we really liked the way it looked, and how it was great for the drivers to drive.

Drivetrain:
3 wheels, front two driven, the back coasts
Single Speed: ~10 fps
4 CIM Drive through 14.88:1 Toughboxes
6" AndyMark HiGrip 2012 KoP wheels in the front, omni in the back.

Arm:
Long pieces are 2"x1" Aluminum Tube with a 1/8th inch wall.
Lifted by a BAG motor through a 100:1 Versaplanitary gearbox turning a 5:1 chain reduction. Overall reduction: 500:1 (This is subject to change before competition for a slightly higher ratio)

Frisbee Feeder:
Lynxmotion tread running off of a BAG motor through a 10:1 Versaplanitary gearbox.
To load the Frisbees back into the arm, we use a tape measure pulling toward the tread. It retracts as we load a Frisbee in, yet as we spit our frisbees, it pulls them forward into the tread.

Autonomous:
We should be able to score 2 disks into the 1 point basket in auton for a grand total of 4 points!

We will be competing at the Saint Louis regional.

A big thanks goes out to our coach, mentors, parents, and sponsors. A REALLY BIG thanks goes out to Ranken Technical Institute for welding our robot, and we look forward to working with you in the future.