Vernier Software and Technology
Vernier Software & Technology

Mine Sweeper


Military service personnel use robots to do tasks that might be dangerous to humans. One common example is working with explosives such as landmines. A robot is used to venture out into a potential minefield and locate a landmine, allowing the soldier to disarm or detonate it from a safe distance. Landmine detection is becoming increasingly important because, sadly, we live in a world where there have been many wars and thousands of landmines have been hidden. Many of these mines remain long after the war is over. In this project, your challenge is to build a sensor-controlled robot to locate a hidden “landmine” as represented by a small magnet.


In this project, you will design and build a mobile robot to replicate the behavior of a military device searching for landmines. You will use small disc magnets hidden under a cloth or large sheet of paper to represent the buried landmines. Your challenge is to locate and pinpoint the exact location of these "mines." Your robot should be capable of searching a wide area, in the neighborhood of a 4" wide and 3' long strip, with a Vernier Magnetic Field Sensor. Once the sensor detects a magnet, the robot should stop with the tip of the sensor directly above the hidden magnet (the white dot on the sensor should be facing downward) and the robot should sound an auditory indicator.

Sensors and Equipment

This project/activity features the following Vernier sensors and equipment.

Additional Requirements

You will also need NXT Sensor Adapter and a LEGO MINDSTORMS NXT robotics system.

Standards Correlations

See all standards correlations for STEM 2 with Vernier and LEGO® MINDSTORMS® NXT »

STEM 2 with Vernier and LEGO® MINDSTORMS® NXT

See other experiments from the lab book.

2First-Class Levers
3Audio Assistant
6String Tension Tester
7Gas Pressure
8Yeast in Action
9Grip Strength
10Cartesian Diver
12Lemon Battery
13Battery Tester
14Solar Cells
15Solar Tracker
16Mapping a Magnetic Field
18Migrating Robot
19Magnet Finder
20Mine Sweeper

Project/activity 20 from STEM 2 with Vernier and LEGO® MINDSTORMS® NXT Lab Book

<em>STEM 2 with Vernier and LEGO<sup>®</sup> MINDSTORMS<sup>®</sup> NXT</em> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

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