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Building a Balancing Scooter

Some guy built his own scooter similar to the Segway except for one key difference: "There is no redundancy or backup system. It is not even robustly made. Loose wires literally dangle out the bottom. In the fairly likely event of the software crashing, a wire coming loose, a component failing, or the batteries running low, the wheels will lock and the entire kinetic energy of the system will be used to accelerate my head toward the ground. " Hehehe