Lesson 57 · Change which way a piece is facing

Mecano basics · 5 min · See the playlist on YouTube ↗

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Placing a piece is two things: where it is and which way it's facing. Turning changes its posture without moving it from its spot, and that decides whether a servo pushes inward or outward and whether a sensor sees what it needs to see.

🎯 The challenge of this lesson

Place an ultrasonic sensor on the edge of a board and rotate it until it faces away from the robot; then tilt it on the X axis and notice that it hasn't moved, only changed its posture.

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