Figure 6 shows the course layout for the Wall task. The robot will use a cordless drill to cut through wall boards to remove a prescribed triangular shape.

The Wall task will be scored as follows:  (1) Cut one edge between two green vertices (1 point), (2) Cut a second edge (1 point), and (3) Cut a third edge and remove triangular piece from wall (1 point).

The wall material will be ½ inch thick drywall. There will be no obstruction or supports directly behind the cut pattern.

A single right triangle will be drawn on the wall as the shape to cut.  The three vertices will be six (6)-inch diameter circles colored green.  Two of the vertices will have a height of 36 inches, and the other vertex will have a height of 48 inches.   The edges connecting the vertices will be six (6) inches wide and colored blue.  The vertical edge will be 12 inches long, and the horizontal edge will be 24 inches long. 

The task is to cut exclusively within the area colored green or blue to remove the red area, while not cutting into the area outside the area colored green, that is, not cutting any gray area. Once all green areas are connected with cut lines, the robot may push the drywall in an attempt to remove the red area. If the drywall is removed in this way, all breaks in the drywall must be within the margins described above. If the cracks extend into the gray area, the final task will not be considered complete.  There is no requirement regarding the order or number of cuts necessary to remove the inner triangle. 

Teams may choose between two drills:

Dewalt DCD980M2 cordless drill or similar, and an additional side handle.  The DCD980M2 has a trigger; to operate, the robot must grasp the drill and squeeze the trigger.  This drill has a side handle, which the teams may set in any orientation or removed.  The drill only runs for ten (10) minutes before it must be re-triggered.
Dewalt DC550 cordless drill or similar, The DC550 has an on/off switch, not a trigger.  To operate this drill, the robot must grasp the drill and press the on/off switch. (Note that the on/off switch is guarded by a piece of yellow plastic that prevents accidental switching.  Some robot “fingers” might have trouble making contact with the switch.  Teams might consider adding a “bump” on the finger that improves access to the switch.)

Teams may choose between two drill bits:

Morris13042 bit or similar.  Typically, this would be used with the DCD980M2.
DW6603 ⅛ inch bit or similar. Typically, this would be used with the DC550 drill.

Two fully-charged drills of the type selected will be provided on a shelf in the workspace, both set to the highest speed. Drills will be OFF.  Bits will be pre-installed.  If one of the tools ceases to function (for example because the robot dropped it, or the bit broke), the robot may use the second tool.  If both tools cease to function, the team may call an intervention, and the robot will be returned to the start and two new tools will be provided on the shelf.

Task Schedule - Day 1

Start TimeEnd TimeBlueRed
9:0010:00Intelligent Pioneer


Task Schedule - Day 2

Start TimeEnd TimeBlueRed
11:0012:00Team HKUTartan Rescue
1:002:00IHMC RoboticsDRC-Hubo
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