Sterling - a LEGO EV3 line following robot

Building instructions for a simple LEGO EV3 robot built using two large motors and a color sensor. The robot is compact which makes it perfect for following a line. Note that the motors are upside down, which will make the robot go backward when we program it to go forward.

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#466
01 Apr 2018

To construct this you will need

LEGO Mindstorms EV3 45544 Education Core
LEGO Mindstorms EV3 45560 Education Resource

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Courses and lessons with this Material

This Material is used in the following courses and lessons

Level B2. "Military Technologies". Robotics with LEGO

The firfth level of the Robotics with LEGO curriculum for students in second, third or fourth grades.

The students build many robots with chain-treads. The Color Sensor is introduced and robots use it to recognize the colors of the objects around them. Students learn about gears, basic gear constructions, and their application. Robots now can stop on a black line and can follow a line using their sensor.

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Lesson 4 - Third black line

Introduction

Key part of the warfare is the intelligence. If two armies are at war, usually one of the two is smaller and will want to apply some secret strategy in order to win the war. In that case the larger army would like to figure out that strategy in order to counter it. Today we build a scout robot. The task of the robot will be to follow an army and find out where is it positioned and what is its plan for action.

Do you know what is key for scouts? Why are they needed?

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In order to be able to spot the enemy, the robot will need to follow their tracks. People leave all kinds of tracks and a whole army will leave even more! For instance they would have a campfire, or throw out their cans of beer and most certainly they will leave a lot of trampled grass. However, if they are smart they will cover most of their tracks and that is why our robot should be able to outsmart them!

Robotics with LEGO - Level 1.5 - Spy games

The second level of the Robotics with LEGO curriculum for students from fifth to twelfth grades.

Students build multiple robots with thread chains and become familiar with the physical concepts of momentum and center of gravity. The concept of gears, their use and basic constructions involving gears are studied.
The new concept of "condition" is introduced in programming. Robots are becoming smarter as they can make complex decisions on their own. "Spy robots" follow their targets and avoid being noticed. This level introduces the light sensor which the robots use to recognize the colors of the objects they are looking for. Robots can stop on a black line and follow a route marked with a colored line on the floor.
The spy's most complex mission in the end of the level is to turn into a sumo wrestler and defeat any other robot in the ring.

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Lesson 4 - Following clues

Introduction

Sterling - a LEGO EV3 line following robot

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To construct this you will need

Bill of materials (Parts list)

Modules Navigation

Prepare for FIRST LEGO League 2024/2025 SUBMERGED Robot Game. The complete guide

Courses and lessons with this Material

Level B2. "Military Technologies". Robotics with LEGO

Lesson 4 - Third black line

Introduction

Robotics with LEGO - Level 1.5 - Spy games

Lesson 4 - Following clues