1. Echo locator

    Echo locator

    How could you build a device that uses sound to indicate the distance to the nearest object? For example, as an aid for a person with vision impairment. Other than using the Ultrasound Sensor, are there any other sensors that could be used to measure distance? Resources Echo Locator lesson...

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  2. Dancing robot

    Dancing robot

    Design, construct and program a dancing robot that has at least two moving parts and at most two motors. Set your robot’s dance to music. Resources Dancing Robot lesson plan – ROBOLAB + NXT-G (PDF)  

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  3. Find the hidden letter

    Find the hidden letter

    In this activity, use a robot equipped with a light sensor to determine the hidden letter message (under a table or in another room). The letter will be determined using light sensor collected data on 3 passes over of the letter.      Resources Find the Hidden Letter lesson plan...

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  4. 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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  5. Tomb raider

    Tomb raider

    The idea of this challenge is to have students set up several light sensors to log data over time. After the setup is complete, run the programs, turn off the lights in the room, and have the students leave. Walk around the room near the different sensors with a flashlight....

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  6. 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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  7. Zombie attack

    Zombie attack

    In this activity, a group of students each build a robot. Each robot is assigned a number. It will then have to tag other robots with the number by using mail. Five tags and the robot takes on that robot’s number. The winner is the robot that has given its...

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  8. 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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  9. 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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  10. 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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