Line Tracking Block Stacking
The mini-challenge is to build a robot that will pick up a set of blocks that are on a 3/4” black line, and build one or more stacks of blocks out of them. The robot can build the towers anywhere it wants, on or off the line. For a simpler challenge, build only two block high towers, and only along a straight line. For a more difficult challenge, build towers as high as you can, and follow a line with bends in it. (Blocks will be placed on the line at least six inches past any bend.)
(Originally: Stack a neat row of 16 4x4x4 LEGO cubes into towers. Cubes will initially be four inches apart. Less towers is better.)
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