Our robot stood about 8 inches tall, and the solid part of our base took up about
another 7 by 10 inches. We used a total of 4 tires.
On the front side of the robot, we attached the most
flexible of our lego parts. These acted as guides, so that we could
move our robot behind an "egg," push it forward, and not have to worry
about the ball rolling off to the side as we pushed to towards the trough.
Including these flexible guides, our robot's entire base took up about
1 square foot. Our battery pack was mounted on top of our gear boxes.
On top of our battery pack, we put our trusty handyboard. If we could have
redone our design, we might have distributed the weight a bit better.
Stacking our heaviest components in this way caused a lot of weight to be
put on the rear tires.
Motors:
We had two motors attached to gear boxes that powered the two rear tires.
Servos:
Our Big Baby had power steering! We attached one servo to each of our two front
tires.
Sensors
We used a total of 6 sensors.
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4 Digital Sensors - The base of our robot was roughly in the shape of a
rectangle. We embedded 4 sensors on each side. The front sensor was
about 1/4 of an inch above the ground. The other three were a little less than
2 inches from the ground.
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2 Analog Optical Sensors - These two were attached near the bottom, rear corners of
the robot.