1. 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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  2. Relay race

    Relay race

    Design and construct a team, comprising of  three cars, to compete in a relay race. Only one car may move at a time. Hint: Is there a way to send messages between team mates?  Resources Relay Race lesson plan – ROBOLAB + RCX (PDF)    

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  3. Ultrasonic touch guitar

    Ultrasonic touch guitar

    The idea of this radical challenge is to use the ultrasonic sensor, touch sensors, and buttons on the NXT to create a guitar. The ultrasonic sensor can control the pitch of the note based on the location of the user’s hand, and the touch sensors can control other parameters of...

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  4. NXT-G programming icons

    NXT-G programming icons

    The NXT Worksheet toolkit (ZIP) contains a set of images of the programming blocks used in the LEGO MINDSTORMS NXT Software (NXT-G). These can be used to create worksheets and instructions for students. Note: These are images of generic blocks, so they do not have unique features such as a...

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  5. Sound display

    Sound display

    The idea of this challenge is to collect and display sound data from the NXT sound sensor in real time on the LCD display of the NXT. You could include the ability to pause data collection by bumping a button to “freeze” a particular screen of the data until another...

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  6. Third-party sensors: Code examples

    Third-party sensors: Code examples

    Here is a collection of code examples for third party sensors. Codatex Download Codatex code examples (ZIP) including: RFID read NXT-G - This code will use the Codatex RFID sensor to find the correct RFID tag. Once the RFID sensor finds the correct tag, it will make a sound and the...

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  7. Sample music: NXT-G

    Sample music: NXT-G

    Here is a collection of programs written in NXT-G that play a range of well known and some maybe not so well known tunes. Sample music NOTE: All files are zipped *.rbt files. See below for instructions. Bingo Buffalo Soldier Call On Me Hot Cross Buns Mary Had a Little...

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  8. NXT building tips

    NXT building tips

    NXT Building Tips is a brief PDF guide to tips and tricks for building with the LEGO NXT, including: Basic LEGO brick stacking Using pegs to connect beams Connecting beams using axles and bushings Constructing sturdy shapes Attaching a wheel to a motor so that the motor turns Attaching motors...

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