This Robot Moves and Steers with Just One Motor
If you want a robot to move forward and steer, you need at least two motors, right? You can have two drive motors and differential steering, or one drive motor and a second motor turning the wheels. But two is definitely the minimum. Except it isn’t, as Pro Know demonstrated by building this robot that moves and steers with just one motor.
Ultimately, this robot works by taking advantage of inertia. But that is difficult and unintuitive to understand, which is why this single-motor approach doesn’t seem possible at first. Thankfully, the video does a great job of explaining how it works visually by increasing the complexity one step at a time.
That starts by showing something you probably expect: put a vibration motor on a table and it will rotate as it vibrates. That happens because the vibration motor has a purposeful imbalance and the resulting inertia causes...
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