May 15, 2013
They made the drawbridge from the red simple machine set
and the strong walker from the blue set.
We also checked out http://SENSORSCITY.marshall.edu
and drover the rover around.
The bridge can be a draw bridge
or a stable bridge if there are beams cutting the parallelograms to
make triangles.
The walker
is gear down so much that it is strong enough to carry the battery box.
