Name of Activity Things That Go Bump
Author STOMP
Keywords design, construct, NXT, car, bump, wall, damage, touch sensors
Subject NXTs
Grade Level 4, 5, 6, 7, 8, 9+
Time 1 Hour Total
Brief Description In this activity, students will design and construct an NXT car that will stop when it
bumps into a wall to prevent damage to the car.
Lesson Objectives: – To learn to program with touch sensors.
– To create a safety device for an NXT car.
Materials Needed: – NXT Car.
– Assortment of LEGO pieces.
– Computer running NXT software.
Preparation and Set Up:
Set up computers running NXT software.

Arrange students in groups of two.
Distribute necessary material to students.

Necessary Background Vocabulary:
  1. Have students draw out the design for the bumper that they will attach to the front of their car
  2. Have students build an NXT car.
  3. Have students attach a bumper to their car attached to the touch sensor so that the car can respond when it drives into a wall.
  4. Wire the motors to the outputs and the sensors to the inputs of the NXT.
  5. Program the NXT vehicle:
    1. If using NXT MINDSTORMS software, program the car to stop when it hits a wall.
    2. Once students have program their car to stop when the touch sensor is pressed, have students program their car to back up and turn after the car hits a wall, before driving forward again. This program requires a loop.
Reference 1
Reference 2
Reference 3
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