I plan to build the second prototype today, and here is what it should look like:
Wheels will use rubber bands instead of gaskets (saving $1 each wheel):
Holes in the lid will enable a wire ‘hoop catcher’ to be installed:
These notches in the lid allow for wires to be routed from the bread board to the interior of the robot:
These weird shaped holes in the front edge of the base will allow for placement of photocells and a light source, in case I want to add line-following capability:
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