They're on the elevator to productivity.
Today was spent mostly on working on the elevator for the robot. An elevator that shall elevate the totes into the heavens in hopes to score points.
The programmers learned and tried to figure out the code to cause the elevator to raise and lower, which is considerably more complex than it sounds. And when they weren't doing their assigned programming, they tried to come up with a homing system so the robot could sense "where bottom" was, so it knows when to stop, and know where "neutral" is.
On the mechanical side, they were working on the actual elevator (as shown in the pictures below). They were building the drive train, as well as the guidelines for the elevator. Again, it doesn't sound rather magnificent, but it's a great achievement. We now have an elevator.