Brain Teaser

As shown in this bottom view, R1 has two drive wheels (the yellow wheels) and a caster wheel (the silver looking thing). The only way the software can drive the robot around is by setting the speed and direction (forward or reverse) of each wheel. The left speed and direction can be different from the right.

Controlling only the speed and direction of each wheel, how would you make R1:

  • Go forward in a straight line?
  • Turn toward the left?
  • Spin clockwise in place without really going anywhere?

My answers will be disclosed in a new video coming soon to ralphsrobots!


2 thoughts on “Brain Teaser

  1. Welll I know you’d set each wheel facing the same direction and going at the same speed to make R1 go in a straight line! Hehe

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