How to prevent my robot from leaning down?

Since the Top ROW in 2023 is a bit far, something like a long arm or a pole is needed on the robot. I really worry that my robot may lean down on the ground because of such a stretching part. Are there any structural strategies that I can apply to avoid such a situation?

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Keep your robot weight as low (and perhaps back) as possible and your arm as light as possible.

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There are two that come to mind: light weight and counterbalance. These are not mutually exclusive. As some have already pointed out, keeping the weight on the arm (of whatever type) low is a good way to make a robot less tippy. But you can also take a hint from cranes, which use counterweights opposite the arm extension to balance the crane and prevent tipping. This is also a viable design idea and one that, when combined with a low-as-possible arm weight can make your robot more stable.

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