1. Crane

    Crane

    Build a crane that can lift objects one and a half times its weight to a height of 4 inches. Tip 1: What is the relationship between torque and gear-size?  Tip 2: Remember, rotation sensors can track the angle turned by the motor. Resources Crane lesson plan (PDF)  ...

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  2. The stubborn car

    The stubborn car

    Think of a way to design and construct the stubborn car: a car that will always return to its original place no matter how far it is rolled away from its starting point. Tip: How can you track the rotary motion of the car’s wheels? This challenge provides a great...

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  3. Drive in a square

    Drive in a square

    The goal of this activity is to make a robot car drive in a square path. Hint: Rotation sensors are great for controlling the angle of a car’s turn. Resources Square lesson plan – NXT-G (PDF) Square lesson plan – RCX + ROBOLAB (PDF)

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  4. Capture the wind

    Capture the wind

    How could you design and construct a windmill connected to a rotation sensor to measure the speed of the wind?    Tip 1: Even though they can be used as rotation sensors, the NXT motor and the EV3 large motor will not work as well as an RCX Rotation Sensor...

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