1.We put the sensors on the side of the robot so they can detect the information and help the robot know where it is.

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2.We put the block down so all the holes will not be blocked and it will be more stable since the center of gravity is lower.

 

3.We also make the distance between the wheels long enough the base can hold the block and keep it stable.

 

4.We make the two wheels on each side separated to enable it turning the direction.