Quote:
Originally Posted by Alan Anderson
You won't be able to drive straight that way. Your robot will want to move the front diagonally in one direction and the rear diagonally in the other direction, making it drive in a tight circle.
The wheels on opposite sides of the robot need to have opposite orientation. The contact between the rollers and the floor needs to be in an "O" configuration. If you have it in an "X", the robot will not be able to spin well (or at all) under its own power, and it will be easy for an external force to spin it.
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Piggybacking on Alan's post:
Just to be clear, if you view the wheels FROM BELOW (like looking at the bottom of the robot when it's tipped on the side) it should be an "O", as Alan said:
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However, if you view the same robot FROM ABOVE, it will appear as an "X" configuration:
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Any other arrangement of the wheels will cause problems or compromise performance.
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