368D has a square frame with a 4 motor holonomic drive. This holonomic drive has a 1:1 gear ratio. 368D also has a manipulator which has 2 components. The first one is a shovel collector with a 5:1 gear ratio which can scoop up to 2 footballs at a time. To score, we have a basket dumper with a 7 to 1 gear ratio which can hop up to 10 footballs at once. Our autonomous programs has 3 different programs for different sides of the field (left, middle, and right) which can score 7 footballs max.
While working on the robot, there were quite a few challenges we encountered. A big challenge was that the drive does not go very straight; this problem is augmented when the robot is carrying more than 7 footballs. We found out that the motor of one of the wheels was weak. This problem was somewhat fixed during the Pan Pacific competition when Farrington loaned us a motor during the playoffs. The crooked drive did not really impede our driving and autonomous though. Another problem we had was the shovel. When we changed the shovel after Iolani scrimmage, the shovel could not collect footballs in the middle of the field without herding them into the wall. The shovel also messed up our drive system whenever we tried to collect balls. The problem with the shovel was that the entire shovel was dragging on the floor, creating more friction between the floor and drive. This was solved by placing some stoppers on the front of the bot to prevent the shovel from going all the way down. The shovel ended up being a little bit above the ground.