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    Case 25 - Catapult Ram (I)

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    Part 1   Objective

    Write a program to make the Catapult Ram catapult balls.

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    Part 2   Preparation

    • Mechanical parts and electronic modules of Catapult Ram

    • USB cable (Type-B) x 1

    • Computer with network access x 1

    Follow the building steps to build a Catapult Ram. Install the MegaPi encoder/DC motor drivers on MegaPi, connect the motors to the motor ports on MegaPi by using the motor cables, connect MegaPi to the computer by using the USB cable, open mBlock 5 (PC client or web version), click +add, select Ultimate 2.0 from the Device Library, click Connect, and select the Upload mode.

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    Part 3   Programming

    Make the encoder motors rotate at high speed to catapult the ping pong ball.

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    Part 4   Practice

    1. Try to catapult other objects.

    2. Try to change the rotation angles of the encoder motors for easier catapulting of the ping pong ball.

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