Scratch (Word Blocks) program for follow a line and stop at an intersection with Color Sensors from LEGO Education SPIKE Prime

In this program we demonstrate how to program a SPIKE robot to follow a line with the aid of one color sensor and detect an intersection with another color sensor. Make sure the line is big enough for the sensor to detect it and react to it. For some thinner lines, the speed of the robot can be lowered, but if that does not help, the program can be easily adapted to work with reflected light intensity.

This program was intended for and tested on the Gazon robot

How to open?

Programs with extension *.llsp could be opened with version 2 of the LEGO Scratch Word Blocks software. It is also known as 'SPIKE Legacy'. You can download it from LEGO website. You can also visit to use it online Note that this programs are incompatible with version 3 of the software.

  • #svy2oz
  • 10 Aug 2022

Courses and lessons with this Program

This Program is used in the following courses and lessons

Image for LEGO Education SPIKE Prime Programming for competition with Word Blocks
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  • 188:21
  • 19
Image for Follow a line and stop at an intersection
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  • 1
  • 3d_rotation 1